JP2018066474A - gasket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gasket that is provided with a C-ring member on each side of a spiral gasket and expanded by pressure change on an inside or outside thereof, thereby securing sealing property, and to provide a method for manufacturing the same.SOLUTION: A spiral gasket is formed by winging a hoop 210 and a filler 220 alternately and repeatedly into a spiral shape. Those are stored in a first jacket 320 through an opening part of the first jacket 320 and a first C-ring end including an O-ring and a second C-ring end are formed in both end parts of the hoop and the filler.SELECTED DRAWING: Figure 7a

Description

This application is entitled “Gasket and Method of Making the Same” and is filed on Feb. 25, 2016 and Mar. 10, 2016, respectively, U.S. Application No. 62 / 300,309 and U.S. Application No. 15 / 066,314. Claim priority. The entire contents of United States Application No. 62 / 300,309 and United States Application No. 15 / 066,314 are incorporated herein by reference.
The present invention relates to a gasket, and more particularly, to a metal gasket having a spiral jacket in which upper and lower sides of a spiral wound gasket are wrapped with a pair of metal jackets.

  A gasket is a general term for a static seal that is fastened to a fixed joint surface such as a pressure vessel, a pipe flange, and a joint surface of a machine tool with a bolt to prevent leakage. Various types of shapes and materials are used depending on the type of fluid to be operated, pressure, temperature, and other usage conditions.

At first, gaskets were simply used for materials such as paper and leather, but recently, various forms and materials have been used due to complicated and severe use conditions.
That is, the gasket is sandwiched between two pipe bodies to be connected to prevent fluid from leaking from a gap between the pipe bodies. For example, a valve or a pipe is used. In addition, it is interposed between the flanges that are connecting portions of the pipes for transferring the fluid, and has a sealing function for preventing leakage of fluids and preventing external foreign matter from flowing into the pipes. . That is, when a flange such as a valve or a pipe is fastened, the volume of the gasket is compressed by the pressure applied in the axial direction, and the joint between the flanges, which are connection parts, is blocked from the outside.

A gasket used by being mounted in such a plant must maintain a sealed state in accordance with various environments and conditions.
For example, the size and position of the flange on which the gasket is mounted, the bolting process for fastening, etc. must be taken into account. Especially, since the operating condition of the plant is continuous heating and cooling, If a high-temperature and high-pressure fluid repeatedly flows inside, it becomes difficult to maintain the flatness of the flange 2 which is the connecting portion of the pipe body 1 perfectly horizontally. Therefore, the interval between the flanges 2 is shown in FIG. As shown, it spreads in a deflected manner (D2> D1).
That is, the gasket attached to the flange must overcome this deviation and maintain a sealed state, and for that purpose, the yield point in the sealing direction of the gasket must be high and the restoring force must be large.

  However, as shown in FIG. 2a, the gasket is mounted with a high load in the state where there are gaps such as A, B, C between the flange 2 contact surfaces of the tube, or the flange is in operation. When re-bolting is performed, the conventional spiral gasket has a phenomenon in which the hoop 5 or the filler 6 is detached from the gap, the gasket is damaged, and the fluid leaks. There is a danger of.

  The present invention has been devised in order to solve the above-described problems, and can prevent the hoop or filler of the spiral gasket from being detached and the gasket from being damaged. Try to provide a production method.

  In addition, an O-ring member is provided between a spiral gasket and a metal jacket, thereby providing a gasket with further improved sealing performance and a method for manufacturing the gasket.

  It is another object of the present invention to provide a gasket having a C-ring member on both sides of a spiral gasket, which can be expanded by a change in pressure outside or inside to ensure a sealing property, and a manufacturing method thereof.

  It is another object of the present invention to provide a gasket and a method for manufacturing the gasket that can prevent the sealing surface of the gasket from being damaged through the sealing layer provided on the first jacket and the second jacket and further improve the sealing performance.

  The present invention has been devised to solve the above-mentioned problems, and provides an O-ring member between a can profile having saw teeth on the upper and lower surfaces and a metal jacket. An object of the present invention is to provide a gasket having a further improved sealing performance and a method for manufacturing the gasket.

  Another object of the present invention is to provide a gasket in which a spring is provided inside the O-ring member to further improve the sealing performance, and a method for manufacturing the gasket.

  Another object of the present invention is to provide a gasket having a further improved durability by forming a concave or convex end on one side or both sides of the can profile and a method for manufacturing the gasket.

  It is another object of the present invention to provide a gasket and a method for manufacturing the gasket that can prevent the sealing surface of the gasket from being damaged through the sealing layer provided on the first jacket and the second jacket and further improve the sealing performance.

  The present invention has been devised in order to solve the above-described problems, and by providing an O-ring member on one side of a can profile having saw teeth on the upper and lower surfaces, the structure is simple. The present invention also aims to provide a gasket having a high restoring force and a method for manufacturing the gasket.

  Another object of the present invention is to provide a gasket in which a spring is provided inside the O-ring member to further improve the sealing performance, and a method for manufacturing the gasket.

  In addition, a hoop member is provided on the other side of the can profile so as to provide a gasket having a further improved sealing performance and a method for manufacturing the gasket.

  To achieve the above object, according to the present invention, a spiral wound gasket; a first O-ring member positioned inside the spiral gasket; and positioned outside the spiral gasket. A second O-ring member; a first core spring located inside the first O-ring member; a second core spring located inside the second O-ring member; A first jacket having an opening formed on a side thereof, and housing the spiral gasket, the first O-ring member, and the second O-ring member through the opening; An opening is formed, and the spiral gasket, the first O-ring member, the second O-ring member, and the first jacket are formed through the opening. A second jacket formed on the first jacket through the opening of the second jacket; and a second jacket formed to cover the first seal layer. And a third seal layer formed on the second jacket opposite the second seal layer. A gasket is provided.

  In the present invention, the spiral gasket; the first O-ring member positioned inside the spiral gasket; the second O-ring member positioned outside the spiral gasket; and the first O-ring member A first core spring located inside; a second core spring located inside the first O-ring member; an opening is formed on one side, and the spiral gasket and the first O are formed through the opening. A first jacket accommodating the ring member and the second O-ring member therein; an internal seal layer formed on the spiral gasket through the opening of the first jacket; an opening on one side The spiral gasket, the first O-ring member, the second O-ring member, the inner seal layer, and the first jacket are formed and formed through the opening. Two jackets; an outer seal layer formed to cover the first jacket through the opening of the second jacket; and a third jacket formed on the second jacket opposite to the outer seal layer And a sealing layer.

  In the present invention, the spiral gasket; a first C-ring member located inside the spiral gasket; a second C ring member located outside the spiral gasket; the first A first core spring located inside the C-ring member; a second core spring located inside the second C-ring member; an opening formed on one side; and the spiral gasket through the opening; A first jacket for accommodating the first O-ring member and the second O-ring member; an opening is formed on one side; the spiral gasket is formed through the opening; and the first A second jacket accommodating therein an O-ring member, the second O-ring member, and the first jacket; formed on the first jacket through an opening of the second jacket; A first seal layer; a second seal layer formed to cover the first seal layer; and a third seal layer formed on the second jacket opposite to the first seal layer A gasket characterized by comprising:

  In the present invention, the spiral gasket; the first C-ring member positioned inside the spiral gasket; the second C-ring member positioned outside the spiral gasket; and the first C-ring member A first core spring positioned inside; a second core spring positioned inside the second C-ring member; an opening is formed on one side, and the spiral gasket and the first O are formed through the opening. A first jacket accommodating the ring member and the second O-ring member therein; an internal seal layer formed on the spiral gasket through the opening of the first jacket; an opening on one side The spiral gasket, the first O-ring member, the second O-ring member, the inner seal layer, and the first jacket are formed and formed through the opening. Two jackets; an outer seal layer formed to cover the first jacket through the opening of the second jacket; and a third jacket formed on the second jacket opposite to the outer seal layer And a sealing layer.

  The opening of the first C-ring member is formed in the inner direction of the gasket, and the opening of the second C-ring member is formed in the inner direction of the gasket. I will provide a.

  The opening of the first C-ring member is formed in the outer direction of the gasket, and the opening of the second C-ring member is formed in the outer direction of the gasket. I will provide a.

  The opening of the first C-ring member is formed in a direction facing a contact surface of a flange on which the gasket is mounted, and the opening of the second C-ring member is mounted on the gasket. A gasket is characterized in that it is formed in a direction facing the contact surface of the flange.

  The opening of the first C-ring member is formed in an inner direction of the gasket, and the opening of the second C-ring member is formed in an outer direction of the gasket. I will provide a.

  The first core spring is a plate coil spring, and the second core spring is a plate coil spring.

  In addition, the spiral gasket is formed by alternately and repeatedly winding a hoop and a filler, and the hoop is formed in a double shape including two peaks and a valley. The two crest directions are directed to the outside of the gasket to provide a gasket.

  The filler may be formed of any one of graphite, ceramic, and mica, or a combination thereof. That is, the filler can be made of a non-asbestos material.

  The first seal layer, the second seal layer, and the third seal layer are made of graphite, mica, polytetrafluoroethylene (PTFE), silver, and a stainless steel atomized steel. Provided is a gasket formed of any one of these or a combination thereof.

  The inner seal layer, the outer seal layer, and the third seal layer may be any one of graphite, mica, polytetrafluoroethylene (PTFE), silver, and a stainless steel sprayed steel (atomized stainless steel). A gasket is provided that is formed of one or a combination thereof.

  The present invention also includes a step of mounting a first O-ring member and a second O-ring member each having a core spring inside the first jacket; the first O-ring member and the second O-ring member A spiral gasket is mounted between the O-ring member; a second jacket comprising the first O-ring member, the second O-ring member, the spiral gasket, and the first gasket; Wrapping the jacket; forming a first sealing layer on the first jacket through the opening of the second jacket; forming a second sealing layer to cover the first sealing layer And a step of forming a third seal layer on the second jacket opposite the second seal layer is provided.

  The present invention also includes a step of mounting a first O-ring member and a second O-ring member each having a core spring inside the first jacket; the first O-ring member and the second O-ring member Attaching a spiral gasket to an O-ring member; forming an internal seal layer on the spiral gasket through an opening in the first jacket; a second jacket comprising the first jacket Wrapping an O-ring member, the second O-ring member, the spiral gasket, the inner seal layer, and the first jacket; the first jacket through an opening of the second jacket And a step of forming a third seal layer on the second jacket opposite to the outer seal layer. To provide a work method.

  According to another aspect of the present invention, a first C-ring member and a second C-ring member each having a core spring are mounted inside the first jacket; the first C-ring member and the second C-ring member A spiral gasket is mounted between the C-ring member; the second jacket is the first C-ring member, the second C-ring member, the spiral gasket, and the first gasket. Wrapping the jacket; forming a first sealing layer on the first jacket through the opening of the second jacket; forming a second sealing layer to cover the first sealing layer And a step of forming a third seal layer on the second jacket opposite the second seal layer is provided.

  According to another aspect of the present invention, a first C-ring member and a second C-ring member each having a core spring are mounted inside the first jacket; the first C-ring member and the second C-ring member Attaching a spiral gasket to the C-ring member; forming an internal seal layer on the spiral gasket through an opening in the first jacket; and a second jacket comprising the first jacket Wrapping an O-ring member, the second O-ring member, the spiral gasket, the inner seal layer, and the first jacket; the first jacket through an opening of the second jacket And a step of forming a third seal layer on the second jacket opposite to the outer seal layer. To provide a work method.

  The opening of the first C-ring member is formed in the inner direction of the gasket, and the opening of the second C-ring member is formed in the inner direction of the gasket. Provide production methods.

  The opening of the first C-ring member is formed in the outer direction of the gasket, and the opening of the second C-ring member is formed in the outer direction of the gasket. Provide production methods.

  The opening of the first C-ring member is formed in a direction facing the contact surface of the flange to which the gasket is attached, and the opening of the second C-ring member is a flange to which the gasket is attached. A method for manufacturing a gasket is provided, wherein the gasket is formed in a direction facing the contact surface.

  The gasket manufacturing method is characterized in that the first core spring is a plate coil spring and the second core spring is a plate coil spring.

  The spiral gasket is formed by alternately and repeatedly winding a hoop and a filler. The hoop is formed in a double shape including two peaks and one valley. The directions of the two peaks of the hoop are: There is provided a gasket manufacturing method characterized by facing the outside of the gasket.

  The filler may be formed of any one of graphite, ceramic, and mica, or a combination thereof. That is, the filler can be made of a non-asbestos material.

  The first seal layer, the second seal layer, and the third seal layer may be any one of graphite, mica, polytetrafluoroethylene, silver, and stainless steel spray material, or a combination thereof. A gasket manufacturing method is provided.

  The inner seal layer, the outer seal layer, and the third seal layer are formed of any one of graphite, mica, polytetrafluoroethylene, silver, and stainless steel spray material, or a combination thereof. A gasket manufacturing method is provided.

  In order to achieve the above object, according to the present invention, there is provided a gasket interposed between flanges which are connecting portions between tubes, and the gasket includes a first jacket ( a can profile provided on the first jacket; an O-ring member provided on the inner side of the can profile; and a portion of the first jacket; and the can profile and And a second jacket enclosing the O-ring member.

  Further, the present invention is a gasket interposed between flanges that are connection portions between tubes, wherein the gasket includes a first jacket; a can profile provided on the first jacket; An O-ring member provided outside the can profile; and a second jacket that wraps a portion of the first jacket and the can profile and the O-ring member. .

  Further, the present invention is a gasket interposed between flanges that are connection portions between tubes, wherein the gasket includes a first jacket; a can profile provided on the first jacket; An O-ring member provided inside and outside the can profile; and a second jacket that wraps a part of the first jacket and the can profile and the O-ring member; provide.

  Further, the present invention provides a gasket characterized in that sawtooth is formed on the upper surface of the can profile, and sawtooth is formed on the lower surface of the can profile.

  The saw blade may be formed through a serration process.

The first jacket may be a flat gasket.
In addition, the second jacket is wider than the first jacket, and the second jacket is subjected to a bending process so that a part of the first jacket, the can profile, and the O-ring member are formed. A gasket characterized by wrapping is provided.

  Also, the present invention provides a gasket characterized in that a spring is provided inside the O-ring member.

  The spring may be a plate coil spring.

  The can profile is provided with an inner end portion having a concave bend so as to be in close contact with the O-ring member.

  Further, the can profile is provided with a gasket characterized in that an outer end portion having a convex bend is formed on the outside in contact with the first jacket or the second jacket.

  The first jacket may be bent to wrap the can profile and the O-ring member.

  Also, the can profile is provided with an outer end portion having a concave bend so as to be in close contact with the O-ring member.

  Further, the can profile is provided with a gasket characterized in that an inner end portion having a convex bend on the inner side is formed in contact with the first jacket or the second jacket.

  In addition, the present invention provides a gasket, wherein a sealing layer is formed on each of a lower surface of the first jacket and an upper surface of the second jacket.

  The sealing layer may be formed of any one or a combination of graphite, mica, polytetrafluoroethylene (PTFE), silver, stainless steel spray material, and ceramic. A gasket is provided.

  The present invention also includes a step of preparing a first jacket; a step of seating a can profile on the first jacket; a seating of an O-ring member inside the can profile on the first jacket And a second jacket is bent to enclose a portion of the first jacket, the can profile and the O-ring member. To do.

  The present invention also includes a step of preparing a first jacket; a step of seating a can profile on the first jacket; and an O-ring member seating on the outside of the can profile on the first jacket. And a second jacket is bent to enclose a portion of the first jacket, the can profile and the O-ring member. To do.

  The present invention also includes a step of preparing a first jacket; a step of seating a can profile on the first jacket; a step of seating an O-ring member on the inside and outside of the can profile; And a second jacket is bent to wrap a portion of the first jacket, the can profile and the O-ring member.

  Further, the present invention provides a gasket manufacturing method, wherein a saw blade is formed on the upper surface of the can profile, and a saw blade is formed on the lower surface of the can profile.

  The saw blade may be formed through a serration process.

  The first jacket may be flat so as to provide a gasket manufacturing method.

  In addition, the gasket manufacturing method is characterized in that the second jacket is wider than the first jacket.

  The gasket manufacturing method is characterized in that a spring is provided inside the O-ring member.

  Further, the present invention provides a gasket manufacturing method, wherein the spring is a plate coil spring.

  Further, the can profile is provided with a gasket manufacturing method characterized in that an inner end portion having a concave bend is formed so as to be in close contact with the O-ring member.

  Further, the can profile is provided with a gasket manufacturing method characterized in that an outer end portion having a convex bend is formed on the outer side, which is in contact with the first jacket or the second jacket.

  The first jacket may be bent to wrap the can profile and the O-ring member.

  Also, the can profile is provided with a gasket manufacturing method characterized in that an inner end portion having a convex bend on the inner side is formed in contact with the first jacket or the second jacket.

  In addition, after the second jacket is bent to wrap the part of the first jacket, the can profile and the O-ring member, the lower surface of the first jacket and the second jacket The method further includes the step of forming a seal layer on each of the upper surfaces of the gaskets.

  The sealing layer may be formed of any one or a combination of graphite, mica, polytetrafluoroethylene (PTFE), silver, stainless steel spray material, and ceramic. A gasket manufacturing method is provided.

  In order to achieve the above object, according to the present invention, there is provided a gasket interposed between flanges, which are connecting portions between tubes, and the gasket has a can profile. And a C-ring end formed inside the can profile; and an O-ring member provided in the C-ring end. .

  The present invention is also a gasket interposed between flanges, which are connecting portions between tubes, wherein the gasket is a can profile; a C ring end formed on the outside of the can profile; And an O-ring member provided in the end portion of the C-ring.

  Further, the present invention provides a gasket characterized in that sawtooth is formed on the upper surface of the can profile, and sawtooth is formed on the lower surface of the can profile.

  The saw blade may be formed through a serration process.

  Further, the present invention provides the gasket, wherein the upper surface of the can profile is formed in a convex shape, and the lower surface of the can profile is formed in a convex shape.

  The gasket may further include a spring provided inside the O-ring member.

  The gasket may be a coil spring.

  The gasket further comprises an outer hoop support end formed on the outer side of the can profile.

  In addition, the outer hoop supporting end portion is provided with a V-shaped groove for accommodating a concave portion of the hoop, and a gasket is provided.

  A hoop member that is in close contact with the outer hoop support end, and the hoop member is formed in a double (w) shape including two peaks and one valley, and the two peaks of the hoop member are formed. A direction is provided that faces the outside of the gasket.

  In addition, the present invention provides a gasket characterized in that a filler is filled between the hoops of the hoop member.

  According to the gasket and the manufacturing method thereof according to a preferred embodiment of the present invention, the following effects can be obtained.

  1. Compared to other gaskets of the same size, there is an effect that a high clamping force and a restoring force can be provided. Therefore, there is an effect that the sealing performance is improved even at high temperature and high pressure.

  2. Since the upper and lower sides of the spiral gasket are wrapped with a metal jacket, it is possible to prevent the phenomenon that the hoop or filler of the spiral gasket is detached even when the gasket is mounted with a high load. .

  3. Since the O-ring members provided with the core springs are arranged on both sides of the spiral gasket, there is an effect that the compression phenomenon of the gasket can be suppressed. Therefore, according to the gasket and the manufacturing method thereof according to a preferred embodiment of the present invention, there is an effect of improving the restoring force and the sealing performance.

  4). When C-ring members are arranged on both sides of the spiral gasket and fluid flows out from the joint surface of the flange, the C-ring member expands so that the hoop of the spiral gasket spreads. There is an effect that the seal can be maintained more firmly.

  5. Since the step between the jackets enclosing the spiral gasket can be easily eliminated by using the seal layer, there is an effect that the pressure applied to the inside of the gasket can be adjusted uniformly.

  6). By further providing a sealing layer formed of graphite, mica, ceramic, silver, etc. on the upper and lower surfaces of the gasket, there is an effect that the adhesion of the joint surface between the gasket and the flange can be maintained more firmly. .

  7). By providing the inner seal layer on the spiral gasket of the gasket, there is an effect that the pressure applied to each part of the spiral gasket can be transmitted in the same manner.

  8). By using a plate coil spring as the core spring inside the O-ring member or the C-ring member, there is an effect that the restoring force can be secured and the pressure can be uniformly distributed to extend the life of the gasket.

  9. Since the O-ring member is disposed on one side, both sides, or the center of the can profile, there is an effect that the pressing phenomenon of the gasket can be suppressed. Therefore, according to the gasket and the manufacturing method thereof according to a preferred embodiment of the present invention, there is an effect of improving the restoring force and the sealing performance. Further, by mounting a spring inside the O-ring member, there is an effect that it is possible to provide a gasket with improved restoring force.

  10. By further providing a seal layer formed of graphite, mica, ceramic, silver, etc. on the upper and lower surfaces of the gasket, there is an effect that the adhesion of the joint surface between the gasket and the flange can be maintained more firmly. .

  11. By using a plate coil spring as a core spring inside the O-ring member, there is an effect that a restoring force can be secured and the pressure can be uniformly distributed to extend the life of the gasket.

  12 By making the can profile portion in contact with the O-ring member have a concave bend having a radius of curvature similar to that of the O-ring member, the can-profile inside the gasket moves to the right and left to break the O-ring member. Can be prevented. Therefore, there is an effect that the durability of the gasket can be further improved.

  13. The structure in which the jackets on the inner side and the outer side of the gasket overlap with each other has an effect of providing a gasket stronger against external pressure.

  14 There is an effect that the can profile and the O-ring member of the gasket can be protected through the internal seal layer formed inside the gasket. In addition, the jacket can be prevented from being damaged by the can profile.

  15. By arranging an O-ring member provided with a spring on one side of the can profile and a hoop member on the other side of the can profile, there is an effect that the compression phenomenon of the gasket can be suppressed. Therefore, according to the gasket and the manufacturing method thereof according to a preferred embodiment of the present invention, there is an effect of improving the restoring force and the sealing performance.

  16. By using a plate coil spring as a core spring inside the O-ring member, there is an effect that a restoring force can be secured and pressure can be evenly distributed to extend the life of the gasket.

  17. With the saw-tooth members formed on the upper and lower surfaces of the can profile, the load of the fastening bolt can be concentrated on the crest portion of the saw-tooth member even under a low tightening pressure. Therefore, there exists an effect which can provide the sealing performance without a clearance gap.

  18. Through the C-ring end formed in the can profile, the O-ring member can be easily fixed and attached without an external jacket. Therefore, such a simple structure is effective in providing a gasket that can reduce production costs. In addition, the restoring force of the gasket can be improved.

  19. There is an effect that it is possible to provide a gasket that can more effectively prevent the fluid from flowing out from the pipe line through a hoop member formed on one side of the can profile of the gasket. In addition, there is an effect that a more improved restoring force can be provided by applying a pressure evenly to the folded portion of the hoop.

FIG. 1a is a view showing an example of a state in which a flange to which a gasket is applied is deflected. FIG. 2 a is a diagram illustrating an example of a state in which a gap is generated between the contact surfaces of the flange. FIG. 3a is a view showing an example of a state of the gasket according to the first embodiment of the present invention. FIG. 4a is an enlarged view showing a section of the gasket according to the first embodiment of the present invention as described above. FIG. 5a is a view showing an example of a cross section of a gasket according to a second embodiment of the present invention. FIG. 6A is a view showing an example of a cross section of a gasket according to a third embodiment of the present invention. FIG. 7a is a cross-sectional view illustrating an example of a gasket according to a fourth embodiment of the present invention. FIG. 8a is a view showing an example of a cross section of a gasket according to a fifth embodiment of the present invention. FIG. 9a shows an example of a cross section of a gasket according to a sixth embodiment of the present invention. FIG. 10a is a view showing an example of a cross section of a gasket according to a seventh embodiment of the present invention. FIG. 11a shows an example of a cross section of a gasket according to an eighth embodiment of the present invention. FIG. 12a shows an example of a cross section of a gasket according to the ninth embodiment of the present invention. FIG. 13a shows an example of a cross section of a gasket according to a tenth embodiment of the present invention. FIG. 14a shows an example of a cross section of a gasket according to an eleventh embodiment of the present invention. FIG. 15a shows an example of a cross section of a gasket according to a twelfth embodiment of the present invention. FIG. 16a is a view showing an example of a core spring employed in each embodiment of the present invention. FIG. 17a is a view showing an example in which a core spring employed in each embodiment of the present invention is manufactured. FIG. 18a shows an example of a cross section of a gasket according to a thirteenth embodiment of the present invention. FIG. 19a shows an example of a cross section of a gasket according to a fourteenth embodiment of the present invention. FIG. 20a shows an example of a cross section of a gasket according to the fifteenth embodiment of the present invention. FIG. 21a shows an example of a cross section of a gasket according to the sixteenth embodiment of the present invention. FIG. 22a shows an example of a cross section of a gasket according to the seventeenth embodiment of the present invention. FIG. 23a is a view showing an example of a cross section of a gasket according to an eighteenth embodiment of the present invention. FIG. 24a is a drawing showing an example of a cross section of a gasket according to the nineteenth embodiment of the present invention. FIG. 25a shows an example of a cross section of a gasket according to the twentieth embodiment of the present invention. FIG. 26 a is a drawing showing an example of a cross section of a gasket according to the twenty-first embodiment of the present invention. FIG. 27a shows an example of a cross section of a gasket according to the 22nd embodiment of the present invention. FIG. 28a shows an example of a cross section of a gasket according to the 23rd embodiment of the present invention. FIG. 29a is a cross-sectional view illustrating an example of a gasket according to a twenty-fourth embodiment of the present invention. FIG. 30a shows an example of a cross section of a gasket according to the 25th embodiment of the present invention. FIG. 31a is a drawing showing an example of a cross section of a gasket according to the 26th embodiment of the present invention. FIG. 32a shows an example of a cross section of a gasket according to the 27th embodiment of the present invention. FIG. 33a shows an example of a cross section of a gasket according to the twenty-eighth embodiment of the present invention. FIG. 34a shows an example of a cross section of a gasket according to the 29th embodiment of the present invention. FIG. 35a shows an example of a cross section of a gasket according to the thirtieth embodiment of the present invention. FIG. 1B is a view showing an example of a state in which a flange to which a gasket is applied is deflected. FIG. 2 b is a diagram illustrating an example of a state in which a gap is generated between the contact surfaces of the flange. FIG. 3b is a view showing a modified form of the gasket according to the first embodiment of the present invention. FIG. 4B is a view illustrating an example of a state of the gasket according to the first embodiment of the present invention. FIG. 5b is a view showing a modified form of the gasket according to the second embodiment of the present invention. FIG. 6b is a view showing a modified form of the gasket according to the second embodiment of the present invention. FIG. 7b is a view showing a modified form of the gasket according to the second embodiment of the present invention. FIG. 8b is a view showing an example of a state of the gasket according to the second embodiment of the present invention. FIG. 9b is a view showing an example of a state of the gasket according to the third embodiment of the present invention. FIG. 10b is a view showing a modified form of the gasket according to the third embodiment of the present invention. FIG. 11b is a view showing a modified form of the gasket according to the third embodiment of the present invention. FIG. 12b is a view showing a modified form of the gasket according to the third embodiment of the present invention. FIG. 13b is a view illustrating an example of a gasket according to a fourth embodiment of the present invention. FIG. 14b is a view showing a modified form of the gasket according to the fourth embodiment of the present invention. FIG. 15b is a view showing a gasket according to a fifth embodiment of the present invention and a modified form thereof. FIG. 16b is a view showing a modified form of the gasket according to the fifth embodiment of the present invention. FIG. 17b is a view showing an example of a state of the gasket according to the sixth embodiment of the present invention. FIG. 18b is a view showing a modified form of the gasket according to the sixth embodiment of the present invention. FIG. 19b is a view showing an example of a state of the gasket according to the seventh embodiment of the present invention. FIG. 20b is a view showing a modified form of the gasket according to the seventh embodiment of the present invention. FIG. 21b is a view showing an example of a state of the gasket according to the seventh embodiment of the present invention. FIG. 22b is a view showing an example of a state of the gasket according to the eighth embodiment of the present invention. FIG. 23b is a view showing a modified form of the gasket according to the eighth embodiment of the present invention. FIG. 24b is a view showing an example of a state of the gasket according to the ninth embodiment of the present invention. FIG. 25b is a view showing a modified form of the gasket according to the ninth embodiment of the present invention. FIG. 26b is a view showing a modified form of the gasket according to the ninth embodiment of the present invention. FIG. 27b is a view showing a modified form of the gasket according to the ninth embodiment of the present invention. FIG. 28b is a view showing an example of a state of the gasket according to the tenth embodiment of the present invention. FIG. 29b is a view illustrating a modified form of the gasket according to the tenth embodiment of the present invention. FIG. 30b is a view illustrating a modified form of the gasket according to the tenth embodiment of the present invention. FIG. 31b is a view illustrating a modified form of the gasket according to the tenth embodiment of the present invention. FIG. 32b is a drawing showing an example of a gasket according to an eleventh embodiment of the present invention. FIG. 33b is a view showing a modified form of the gasket according to the eleventh embodiment of the present invention. FIG. 34b shows an example of a gasket according to the twelfth embodiment of the present invention. FIG. 35b is a view showing a modified form of the gasket according to the twelfth embodiment of the present invention. FIG. 36b shows an example of a gasket according to the thirteenth embodiment of the present invention. FIG. 37b is a view showing a modified form of the gasket according to the thirteenth embodiment of the present invention. FIG. 38b shows an example of a gasket according to the fourteenth embodiment of the present invention. FIG. 39b is a view showing a modified form of the gasket according to the 14th embodiment of the present invention. FIG. 40b shows an example of a gasket according to the fourteenth embodiment of the present invention. FIG. 41b shows an example of a gasket according to the fifteenth embodiment of the present invention. FIG. 42b is a view showing a modified form of the gasket according to the fifteenth embodiment of the present invention. FIG. 43b shows an example of a gasket according to the sixteenth embodiment of the present invention. FIG. 44b is a view showing a modified form of the gasket according to the sixteenth embodiment of the present invention. FIG. 45b is a view showing a modified form of the gasket according to the sixteenth embodiment of the present invention. FIG. 46b is a view showing a modified form of the gasket according to the sixteenth embodiment of the present invention. FIG. 47b is a view showing an example of a gasket according to the 17th embodiment of the present invention. FIG. 48b is a view showing a modified form of the gasket according to the 17th embodiment of the present invention. FIG. 49b is a view showing a modified form of the gasket according to the 17th embodiment of the present invention. FIG. 50b is a view showing a modified form of the gasket according to the 17th embodiment of the present invention. FIG. 51b shows an example of a gasket according to the eighteenth embodiment of the present invention. FIG. 52b is a view showing a modified form of the gasket according to the 18th embodiment of the present invention. FIG. 53b shows an example of a gasket according to the nineteenth embodiment of the present invention. FIG. 54b is a view showing a modified form of the gasket according to the nineteenth embodiment of the present invention. FIG. 55b shows an example of a gasket according to the nineteenth embodiment of the present invention. FIG. 56b is a view showing a modified form of the gasket according to the twentieth embodiment of the present invention. FIG. 57b shows an example of a gasket according to the twenty-first embodiment of the present invention. FIG. 58b is a view showing a modified form of the gasket according to the 21st embodiment of the present invention. FIG. 59b is a view showing an example of a gasket according to the 21st embodiment of the present invention. FIG. 60b shows an example of a gasket according to the 22nd embodiment of the present invention. FIG. 61b is a view showing a modified form of the gasket according to the 22nd embodiment of the present invention. FIG. 62b shows an example of a gasket according to the 23rd embodiment of the present invention. FIG. 63b is a view showing a modified form of the gasket according to the 23rd embodiment of the present invention. FIG. 64b is a view showing a modified form of the gasket according to the 23rd embodiment of the present invention. FIG. 65b is a view showing a modified form of the gasket according to the 23rd embodiment of the present invention. FIG. 66b is a view showing an example of a gasket according to the 24th embodiment of the present invention. FIG. 67b is a view showing a modified form of the gasket according to the 24th embodiment of the present invention. FIG. 68b is a view showing a modified form of the gasket according to the 24th embodiment of the present invention. FIG. 69b is a view showing a modified form of the gasket according to the 24th embodiment of the present invention. FIG. 70b is a view showing an example of a gasket according to the 25th embodiment of the present invention. FIG. 71b is a view showing a modified form of the gasket according to the 25th embodiment of the present invention. FIG. 72b is a view showing an example of a gasket according to the 26th embodiment of the present invention. FIG. 73b shows an example of a gasket according to the 27th embodiment of the present invention. FIG. 74b is a view showing an example of a gasket according to the 28th embodiment of the present invention. FIG. 75b shows an example of a gasket according to the 29th embodiment of the present invention. FIG. 76b is a view showing an example of a gasket according to the 30th embodiment of the present invention. FIG. 77b is a view showing an example of a gasket according to the 31st embodiment of the present invention. FIG. 78b shows an example of a gasket according to the thirty-second embodiment of the present invention. FIG. 79b is a view showing an example of a gasket according to the 33rd embodiment of the present invention. FIG. 80b shows an example of a gasket according to the 34th embodiment of the present invention. FIG. 81b is a view showing an example of a gasket according to the 35th embodiment of the present invention. FIG. 1c is a view showing an example of a state in which a flange to which a gasket is applied is deflected. FIG. 2c is a view showing an example of a state of the gasket according to the first embodiment of the present invention. FIG. 3c is a view showing an example of a modified form of the gasket according to the first embodiment of the present invention. FIG. 4c is a view showing an example of a state of the gasket according to the second embodiment of the present invention. FIG. 5c is a view illustrating a modified form of the gasket according to the second embodiment of the present invention. FIG. 6c is a view showing an example of a gasket according to the third embodiment of the present invention. FIG. 7c is a view illustrating a modified form of the gasket according to the third embodiment of the present invention. FIG. 8c is a view illustrating an example of a gasket according to a fourth embodiment of the present invention. FIG. 9c is a view showing a modification of the gasket according to the fourth embodiment of the present invention. FIG. 10c is a view showing an example of a gasket according to a fifth embodiment of the present invention. FIG. 11c is a view showing a modification of the gasket according to the fifth embodiment of the present invention. FIG. 12c shows an example of a gasket according to the sixth embodiment of the present invention. FIG. 13c is a view showing a modification of the gasket according to the sixth embodiment of the present invention. FIG. 14c is a view showing an example of a gasket according to the seventh embodiment of the present invention. FIG. 15c is a view showing a modification of the gasket according to the seventh embodiment of the present invention. FIG. 16c is a view showing an example of a gasket according to the eighth embodiment of the present invention. FIG. 17c is a view showing a modified example of the gasket according to the eighth embodiment of the present invention. FIG. 18c is a view showing an example of a gasket according to the ninth embodiment of the present invention. FIG. 19c is a view showing a modified example of the gasket according to the ninth embodiment of the present invention. FIG. 20c shows an example of a gasket according to the tenth embodiment of the present invention. FIG. 21c is a view showing a modified example of the gasket according to the tenth embodiment of the present invention. FIG. 22c shows an example of a gasket according to the eleventh embodiment of the present invention. FIG. 23c is a view showing a modified example of the gasket according to the eleventh embodiment of the present invention. FIG. 24c is a view showing an example of a gasket according to the twelfth embodiment of the present invention. FIG. 25c is a view showing a modified example of the gasket according to the twelfth embodiment of the present invention. FIG. 26c shows an example of a gasket according to the thirteenth embodiment of the present invention. FIG. 27c is a view showing a modified example of the gasket according to the thirteenth embodiment of the present invention. FIG. 28c shows an example of a gasket according to the fourteenth embodiment of the present invention. FIG. 29c is a view showing a modified example of the gasket according to the fourteenth embodiment of the present invention. FIG. 30c is a view showing an example of a gasket according to the fifteenth embodiment of the present invention. FIG. 31c is a view showing a modification of the gasket according to the fifteenth embodiment of the present invention. FIG. 32c shows an example of a gasket according to the fifteenth embodiment of the present invention. FIG. 33c is a view showing a modified example of the gasket according to the fifteenth embodiment of the present invention. FIG. 34c shows an example of a gasket according to the sixteenth embodiment of the present invention. FIG. 35c is a view showing a modified example of the gasket according to the sixteenth embodiment of the present invention. FIG. 36c is a view showing an example of a gasket according to the 17th embodiment of the present invention. FIG. 37c is a view showing a modified example of the gasket according to the seventeenth embodiment of the present invention. FIG. 38c shows an example of a gasket according to the eighteenth embodiment of the present invention. FIG. 39c is a view showing a modified example of the gasket according to the 18th embodiment of the present invention. FIG. 40c is a view showing an example of a gasket according to the nineteenth embodiment of the present invention. FIG. 41c is a view showing a modified example of the gasket according to the nineteenth embodiment of the present invention. FIG. 42c shows an example of a gasket according to the twentieth embodiment of the present invention. FIG. 43c is a view showing a modified example of the gasket according to the twentieth embodiment of the present invention. FIG. 44c shows an example of a gasket according to the twenty-first embodiment of the present invention. FIG. 45c is a view showing a modified example of the gasket according to the twenty-first embodiment of the present invention. FIG. 46c shows an example of a gasket according to the 22nd embodiment of the present invention. FIG. 47c is a view showing a modified example of the gasket according to the 22nd embodiment of the present invention. FIG. 48c shows an example of a gasket according to the 23rd embodiment of the present invention. FIG. 49c is a view showing a modified example of the gasket according to the 23rd embodiment of the present invention. FIG. 1d shows an example of a gasket according to the 24th embodiment of the present invention. FIG. 2d is a view showing a modification of the gasket according to the twenty-fourth embodiment of the present invention. FIG. 3d is a view showing an example of a gasket according to the 25th embodiment of the present invention. FIG. 4d is a view showing a modification of the gasket according to the 25th embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
While the invention is amenable to various modifications and alternative forms, specific embodiments have been illustrated by way of example in the drawings and will herein be described in detail. However, this should not be construed as limiting the invention to the particular forms disclosed, but should be understood to include all modifications, equivalents or alternatives that fall within the spirit and scope of the invention.

FIG. 3a is a view illustrating a gasket according to a first embodiment of the present invention.
The gasket of the embodiment of the present invention may have a ring shape as a whole as shown in FIG. 3a, but is not limited thereto, and may be an oval shape, an oblong square shape, a diamond shape as required. ) And so on.
The gasket according to the first embodiment of the present invention includes a spiral gasket 200, an O-ring member 110, a core spring 120, a first jacket 320, a second jacket 310, a first seal layer 421, The second seal layer 422 and the third seal layer 410 can be included.

An O-ring member 110 may be located inside and outside the spiral gasket 200. Of the two O-ring members 110, the O-ring member 110 at a portion close to the flow path of the pipe flange can be referred to as a first O-ring member, and the O-ring located outside the spiral gasket 200. Member 110 can be referred to as a second O-ring member. A core spring 120 can be provided inside the O-ring member 110.
Such a spiral gasket 200, the first O-ring member and the second O-ring member can be accommodated inside the first jacket 320, and the spiral gasket 200 including the first jacket 320, The first O-ring member and the second O-ring member can be accommodated in the second jacket 310.
In addition, a first seal layer 421 can be formed on the first jacket 320 accommodated in the second jacket 310, and a second seal layer 422 is formed on the first seal layer 421. can do. Further, a third seal layer 410 can be formed on the second jacket 310 opposite to the second seal layer 422.

FIG. 4a is an enlarged view showing a cross section of the gasket according to the first embodiment of the present invention.
The spiral gasket 200 according to the first embodiment of the present invention may be generated by alternately repeating the hoops 210 and the fillers 220 and spirally winding them. However, the hoops 210 and the fillers 220 are not necessarily stacked alternately one after another, but are wound in various ways in a direction in which more hoops 210 are wound around the outer or inner portion of the spiral gasket 200 to further strengthen the reinforcing force. Can be generated by turning. That is, it is possible to prevent the filler 220 from flowing out to the outside by winding more hoops 210 around the middle or outside of the spiral gasket 200.

The hoop 210 of the spiral gasket 200 used in the present invention can be made of a zigzag cross section and elastic metal strip, and as can be seen from FIG. 4a, it has two peaks and one valley. It can be manufactured to have a “W” shape. In addition, the two peaks of the hoop 210 are formed so as to face the outer side of the gasket, and when the fluid flows out from the pipe line of the flange, the hoop 210 can be expanded by the pressure of the fluid to prevent additional outflow. .
In addition, the hoop 210 of the spiral gasket 200 of the gasket according to the first embodiment of the present invention can be formed in a “W” shape with three folds. Since such a “W” -shaped hoop has three fold portions, the pressure applied from the outside of the gasket is uniformly distributed and applied to each fold portion, so that the hoop 210 is brought to the external pressure. It has the effect of preventing yielding and loss of resilience.
The filler 220 of the spiral gasket 200 of the present invention can be made of graphite, but is not limited thereto, and can be made of any one of graphite, ceramic, mica, or a combination thereof. . That is, non-asbestos materials can be used.

  The O-ring member 110 provided on the inner side and the outer side of the spiral gasket 200 of the gasket according to the first embodiment of the present invention is formed of a metal material, and serves to prevent deformation of the spiral gasket 200 in the radial direction. Can do. Since such an O-ring member 110 can be made of metal, it is also called a metal tube O-ring. In addition, the core spring 120 provided inside the O-ring member 110 can perform a role of reinforcing the restoring force of the O-ring member 110.

The first jacket 320 according to the first embodiment of the present invention may be made of metal, and the spiral gasket 200, the first O-ring member, and the second O-ring member are accommodated therein through the opening. be able to. Further, the second jacket 310 passes through the opening on the opposite side of the first jacket 320, and the spiral gasket 200, the first O-ring member, the second O-ring member, and the first jacket 320 Can be housed inside.
That is, the gasket according to the first embodiment of the present invention wraps the spiral gasket 200 with the first jacket 320 and the second jacket 310, so that the hoop 210 and the filler 220 of the spiral gasket 200 flow out to the outside. Can be prevented. Further, the O-ring member 110 provided inside the first jacket 320 and the second jacket 310 can achieve an effect of improving the restoring force of the gasket.

A first seal layer 421 may be formed on the first jacket 320 exposed through the opening of the second jacket 310 of the gasket according to the first embodiment of the present invention. The first seal layer 421 is formed to have a thickness approximately equal to the thickness of the first jacket 320, and has an effect of filling the step formed by the second jacket 310 wrapping the first jacket 320. . Note that the second seal layer 422 may be formed on the first seal layer 421 so as to completely cover the first seal layer 421, and is opposite to the second seal layer 422. A third seal layer 410 may be formed on the second jacket 310. Further, the first sealing layer 421 can be configured to have a higher internal density than the second sealing layer 422. That is, even when the first seal layer 421 is made of the same graphite or the like, the first seal layer 421 can be formed to be harder and denser than the second seal layer 422.
Therefore, according to the gasket according to the first embodiment of the present invention, the step formed between the first jacket 320 and the second jacket 310 is easily eliminated by the first seal layer 421 made of graphite or the like. Therefore, the pressure applied to the inside of the gasket can be made uniform. In addition, the second seal layer 422 and the third seal layer 410 have an effect of further improving the adhesion effect with the joint surface of the flange by maintaining the upper surface and the lower surface of the gasket smoothly at the same height.

FIG. 5a is a cross-sectional view of a gasket according to a second embodiment of the present invention.
In the gasket according to the second embodiment of the present invention, the spiral gasket 200, the first O-ring member, and the second O-ring member are accommodated in the first jacket 320 through the opening of the first jacket 320. Can.
In addition, an inner seal layer 411 can be formed on the spiral gasket 200 accommodated in the first jacket 320. The inner seal layer 411 can be formed of a graphite material, but is not limited thereto. Preferably, the inner seal layer 411 can be formed of a material made of any one of graphite, mica, and ceramic, or a combination thereof.

The second jacket 310 of the gasket according to the second embodiment of the present invention is formed to enclose the spiral gasket 200, the first O-ring member, the second O-ring member, and the inner seal layer 411. Can be.
In this process, the inner sealing layer 411 in the second jacket 310 serves to help the second jacket 310 smoothly wrap around the first jacket 320, and when used in the flange, a spiral gasket. The pressure of each part applied to 200 can be transmitted equally.
An outer seal layer 420 may be formed on the surface of the first jacket 320 exposed through the opening of the second jacket 310, and the outer seal layer 420 covers the entire exposed surface of the first jacket. Can be formed. A third seal layer 410 can be formed on the second jacket 310 on the opposite side of the outer seal layer 420.
As a result, the upper and lower surfaces of the gasket can be formed at the same height so that both surfaces are evenly formed, thereby reducing the risk of pressure being concentrated on a certain portion and the gasket being damaged. effective. In addition, since the outer seal layer 420 made of graphite or the like can be applied on the first jacket 320 in one step, there is an effect that the manufacturing process is simplified and the production cost can be reduced.

FIG. 6a is a cross-sectional view of a gasket according to a third embodiment of the present invention.
The gasket according to the third embodiment of the present invention can be manufactured in the same manner as the gasket according to the first embodiment, except that the O-ring member 110 can be changed to the C-ring member 111.
The C-ring member 111 of the gasket according to the third embodiment of the present invention has an opening formed on one side of the O-ring member 110 and has a “C” -shaped cross section. The gasket according to the above can be formed in a direction in which the opening of the C-ring member 111 faces the inside of the gasket.
Therefore, when the fluid flows out from the flow path of the pipe flange, the opening of the C ring member 111 is expanded, and there is an effect that it is possible to prevent the fluid from additionally flowing out to the outside. Note that there is an effect that the spiral gasket 200 can be prevented from being detached in the radial direction of the gasket.

FIG. 7a is a cross-sectional view of a gasket according to a fourth embodiment of the present invention.
The gasket according to the fourth embodiment of the present invention can be manufactured by replacing the O-ring member 110 of the gasket according to the second embodiment with a C-ring member 111.
Similarly to the gasket according to the third embodiment, the gasket according to the fourth embodiment of the present invention allows fluid to flow out from the flow path of the flange by the C ring member 111 provided inside and outside the spiral gasket 200. It is possible to prevent the hoop and filler of the spiral gasket 200 from being separated in the radial direction.

In the gasket according to the fourth embodiment of the present invention, the inner seal layer 411 can be formed on the spiral gasket 200 accommodated in the first jacket. Then, the second jacket 310 covers this, and the spiral gasket 200, the first C-ring member, the second C-ring member, and the inner seal layer 411 are accommodated in the second jacket 310. it can.
Therefore, the spiral gasket 200 can be brought into close contact with the second jacket 310 by the inner seal layer 411, so that the pressure applied to the spiral gasket 200 can be evenly dispersed.
The surface of the first jacket 320 exposed to the outside through the opening of the second jacket 310 may be completely covered with the outer seal layer 420. A third seal layer 410 can be formed on the second jacket 310 opposite to the outer seal layer 420.
Therefore, according to the gasket according to the fourth embodiment of the present invention, since the same pressure can be applied to each part of the gasket from the joint surfaces of both flanges, it is possible to prevent damage to the gasket as much as possible. There is.

FIG. 8a is a cross-sectional view of a gasket according to a fifth embodiment of the present invention.
The C-ring member 111 of the gasket according to the fifth embodiment of the present invention is characterized in that in the gasket according to the third embodiment, the direction is not the inner direction but the outer direction of the gasket.
In the gasket according to the fifth embodiment of the present invention, when the non-ideal pressure is applied from the outside of the flange due to the C ring member 111 facing the outer side of the gasket, the C ring member 111 is expanded and the external pressure is increased. Has an effect of preventing the flange from affecting the pipeline of the flange. Further, when the fluid flows into the gasket, the opening of the C ring member 111 is expanded together with the spiral gasket 200 inside, and the gasket is more closely attached to the joint surface of the flange, thereby improving the sealing effect. There is.

FIG. 9a is a cross-sectional view of a gasket according to a sixth embodiment of the present invention.
The gasket according to the sixth embodiment of the present invention is characterized in that the gasket according to the fourth embodiment is manufactured by changing the direction of the C-ring member 111 so as to face the outer direction of the gasket.
Similarly to the gasket of the fifth embodiment, the gasket according to the sixth embodiment of the present invention is also the second C-ring member positioned outside the spiral gasket 200 when non-ideal pressure is applied from the outside of the flange. Can be prevented from expanding and affecting the inner pipe of the flange.
When the fluid flows into the first jacket 320 of the gasket, the internal spiral gasket 200 and the C-ring member 111 are both expanded so that the gasket is more firmly attached to the joint surface of the flange. Has the effect of

10a and 11a are cross-sectional views of gaskets according to seventh and eighth embodiments of the present invention.
The gaskets according to the seventh and eighth embodiments of the present invention can be formed such that the opening of the C-ring member 111 faces the upper part.
Thus, in the gaskets according to the seventh and eighth embodiments of the present invention, the hoop 210 of the spiral gasket 200 is pushed out more strongly from both sides by the opening of the C-ring member 111 facing upward. Can do.
More specifically, when fluid flows out of the conduit and flows into the first jacket 320 and the second jacket 310 of the gasket, the C-ring member 111 of the gasket is expanded left and right. That is, the first C-ring member positioned inside the spiral gasket 200 and the second C-ring member positioned outside the spiral gasket 200 are expanded to push the spiral gasket 200 from both sides. As a result, the hoop 210 of the spiral gasket 200 spreads out and is more firmly adhered to the contact surface of the flange.
Therefore, according to the gaskets of the seventh and eighth embodiments of the present invention, there is an effect of further solidifying the sealing effect of the joint surface of the flange pipe.

12a and 13a are cross-sectional views of gaskets according to ninth and tenth embodiments of the present invention.
The ninth and tenth embodiments of the present invention are shown in the drawings such that the C-ring member 111 of the gasket faces the lower part of the flange, and according to the seventh and eighth embodiments of the present invention. Although the gaskets appear to be different from the gaskets, the gaskets of the ninth embodiment and the tenth embodiment are actually symmetrical structures that are upside down of the seventh embodiment and the eighth embodiment, and have the same structure. It is.
Therefore, the gaskets of the ninth and tenth embodiments are not different from the gaskets of the seventh and eighth embodiments, and similarly, when the fluid flows into the gasket, the C-ring member 111 Since it is expanded and the spiral gasket 200 is extruded from the inside and the outside at the same time so that the hoop spreads, there is an effect of further enhancing the sealing effect of the joint surface of the flange.

14a and 15a are cross-sectional views of gaskets according to eleventh and twelfth embodiments of the present invention.
The gaskets according to the eleventh embodiment and the twelfth embodiment of the present invention are the gaskets according to the third embodiment and the fourth embodiment, respectively, and the second one located outside the spiral gasket 200 in the C ring member 111. The direction of the opening of the C-ring member is directed outward.
In the gaskets according to the eleventh and twelfth embodiments of the present invention, the opening of the first C-ring member located inside the spiral gasket 200 faces the inside of the gasket, and the outside of the spiral gasket 200 The second C-ring member located in the direction of the gasket faces the outside of the gasket, so that the fluid flowing out from the flange pipe is expanded from the first C-ring member to seal the joint surface, and flows in from the outside of the flange. The fluid has an effect that the second C-ring member can be expanded to firmly seal the joint surface.

FIG. 16a is a view showing an example of a core spring employed in each embodiment of the present invention.
The core spring 120 employed in the O-ring member 110 or the C-ring member 111 of each embodiment of the present invention is a spring manufactured in the form of a plate coil spring 121 formed by winding a long plate. Can be.
Generally, the coil spring 122 can be manufactured by winding an elongated metal wire in the coil direction, as can be seen from FIG. 17A.
However, when a general coil spring 122 is inserted into the O-ring member 110 or the C-ring member 111, the contact portion between the coil spring 122 and the O-ring member 110 or the C-ring member 111 is shown in an enlarged view in FIG. A certain “S” is only a very narrow area. That is, since the contact surface between the coil spring 122 inserted to enhance the restoring force of the O-ring member 110 or the C-ring member 111 and the O-ring member 110 or the C-ring member 111 is small, pressure is applied from the outside. In such a case, a large pressure may be applied to a small area as it is, and the O-ring member 110 or the C-ring member 111 may be easily damaged.

Therefore, a plate coil spring 121 formed by winding a long plate can be used as the core spring 120 according to each embodiment of the present invention.
When the core spring 120 is replaced by the plate coil spring 121, as can be seen from FIG. 16a, the "S" that is the contact portion between the plate coil spring 121 and the O-ring member 110 or the C-ring member 111 can be widely maintained. . That is, since the contact area much larger than “S” in FIG. 17A can be maintained, even when pressure is applied to the O-ring member 110 and the C-ring member 111, the pressure is uniformly dispersed. Can do.
Therefore, there is an effect that the possibility that the O-ring member 110 and the C-ring member 111 are damaged can be further reduced.

18a is a cross-sectional view of a gasket according to a thirteenth embodiment of the present invention.
The gasket according to the thirteenth embodiment of the present invention is characterized in that, in the gasket according to the first embodiment, the hoop 210 of the spiral gasket 200 is formed in a “V” shape.
The hoop 210 formed in the “V” shape of the gasket according to the thirteenth embodiment of the present invention can be manufactured by a single folding process. That is, in the case of the “W” -shaped hoop 210 described above, since the folding process is required three times, the manufacturing process is somewhat complicated. However, the gasket according to the thirteenth embodiment of the present invention is a “V” -shaped hoop. Since only one folding process needs to be performed to make 210, the production cost can be reduced.
Therefore, in the case of the “V” -shaped hoop 210, the pressure is concentrated on a portion where there is a fold, so that the yield is more likely to occur due to external pressure than the “W” -shaped hoop 210, but the manufacturing process is simple. Therefore, there is an effect that the gasket employed for the joint surface of the flange pipe having a relatively low pressure can be provided at a lower cost.

FIG. 19a is a sectional view of a gasket according to a fourteenth embodiment of the present invention.
The gasket according to the fourteenth embodiment of the present invention is characterized in that, in the spiral gasket 200 of the gasket according to the first embodiment, the shape of the hoop 210 is manufactured in a plate shape having a protruding portion.
In the fourteenth embodiment of the present invention, the protrusion of the hoop 210 of the spiral gasket 200 can face the outside of the gasket.
And when a pressure is applied from the exterior of a flange by such a protrusion part, a protrusion part and a 2nd O-ring member can squeeze and the hoop of a gasket can be expanded. The first O-ring member on the opposite side can be squeezed with the depressed portion of the hoop. Therefore, when pressure is applied from the outside or the inside of the gasket as a whole, the hoop of the spiral gasket 200 is widened, so that the fluid in the flange pipe can be prevented from flowing out to the outside. Further, unlike the “V” -shaped hoop 210, the gasket according to the fourteenth embodiment of the present invention has three fold portions, so that it is possible to achieve an additional effect that the pressure is somewhat dispersed.

20a is a cross-sectional view of a gasket according to a fifteenth embodiment of the present invention.
The gasket according to the fifteenth embodiment of the present invention may be the gasket according to the first embodiment, in which the hoop 210 of the spiral gasket 200 is a mixture of “V” shape and “W” shape. .
More specifically, the hoop 210 positioned outside the spiral gasket 200 of the gasket according to the fourteenth embodiment of the present invention may be formed in a “V” shape, and the hoop 210 positioned inside may be “W”. It can be formed in a letter shape.
As described above, the “W” -shaped hoop 210 can disperse the pressure applied to the hoop 210 by the three folds, and the hoop 210 is subjected to a large pressure to yield and lose its restoring force. There is an effect that can be prevented. In addition, since the “V” -shaped hoop 210 has only one fold, the pressure is concentrated on the folded portion and yields more easily than the “W” -shaped hoop, but the manufacturing process is simple. is there.
Accordingly, in the gasket according to the fifteenth embodiment of the present invention, the “V” -shaped hoop 210 is positioned outside the gasket, and the “W” -shaped hoop 210 is positioned inside the gasket, so that a stronger pressure is applied. “W” -shaped hoop is responsible for the applied restoring force on the inside, and “V” -shaped hoop is responsible for the outside, providing the accompanying effect of reducing the production cost while improving the restoring force of the gasket. Can do.

FIG. 21a is a sectional view of a gasket according to a sixteenth embodiment of the present invention.
The gasket according to the sixteenth embodiment of the present invention is characterized in that in the spiral gasket 200 of the gasket according to the fifteenth embodiment, the positions of the “W” -shaped hoop and the “V” -shaped hoop are changed. That is, a “W” -shaped hoop is positioned outside the gasket, and a “V” -shaped hoop is positioned inside the gasket.
Therefore, the gasket according to the sixteenth embodiment of the present invention can be used in a special structure manufactured so that a stronger pressure is applied to the outer side of the joint surface of the flange than the inner side.

FIG. 22a is a sectional view of a gasket according to a seventeenth embodiment of the present invention.
The gasket according to the seventeenth embodiment of the present invention is characterized in that in the gasket according to the first embodiment, the O-ring member 110 is replaced with a simple ring member 510 filled with the inside.
Therefore, the gasket according to the seventeenth embodiment of the present invention has an effect that the manufacturing process can be further simplified by replacing the O-ring member 110 including the core spring 120 with a simple ring member 510. In other words, the restoring force of the gasket is somewhat insufficient compared to the O-ring member 110 provided with the core spring 120, but the ring member 510 is sufficient for a gasket employed for a relatively low pressure flange. Can be employed if it can provide a good resilience.

FIG. 23a is a sectional view of a gasket according to an eighteenth embodiment of the present invention.
A gasket according to an eighteenth embodiment of the present invention is characterized in that, in the gasket according to the seventeenth embodiment, the hoop 210 of the spiral gasket 200 is replaced with a “V” -shaped hoop.
Therefore, there is an effect of simplifying the production process of the spiral gasket 200 and reducing the manufacturing cost.

FIG. 24a is a sectional view of a gasket according to the nineteenth embodiment of the present invention.
The gasket according to the nineteenth embodiment of the present invention is characterized in that, in the gasket according to the seventeenth embodiment, the hoop 210 of the spiral gasket 200 is replaced with a plate-like member having a protrusion. Thereby, the gasket according to the nineteenth embodiment has an effect that the yielding pressure can be somewhat improved.

FIG. 25a is a sectional view of a gasket according to a twentieth embodiment of the present invention.
The gasket according to the twentieth embodiment of the present invention is the same as the gasket according to the seventeenth embodiment, wherein the outer hoop 210 of the spiral gasket 200 is manufactured in a “V” shape and the inner hoop 210 is manufactured in a “W” shape. It is characterized by doing.
With such a structure, the gasket according to the twentieth embodiment of the present invention achieves the purpose of strengthening the restoring force, which is the effect of the “W” -shaped hoop 210, but the manufacturing process which is an advantage of the “V” -shaped hoop 210. The simplification of cost savings can be achieved at the same time.

FIG. 26a is a sectional view of a gasket according to the twenty-first embodiment of the present invention.
The gasket according to the twenty-first embodiment of the present invention is the same as the gasket according to the twentieth embodiment, except that the positions of the “V” -shaped hoop and the “W” -shaped hoop of the spiral gasket 200 are changed. It can be used for special structures where the exterior of the surface is subjected to a greater pressure than the interior.

FIG. 27a is a sectional view of a gasket according to a twenty-second embodiment of the present invention.
The gasket according to the 22nd embodiment of the present invention is the same as the gasket according to the 1st embodiment, except that the O-ring member 110 having the core spring 120 therein is changed to a square ring member 520.
The gasket according to the twenty-second embodiment of the present invention has an effect of simplifying the manufacturing process and reducing the manufacturing cost by substituting the O-ring member 110 with the square ring member 520.

FIG. 28a is a sectional view of a gasket according to the 23rd embodiment of the present invention.
The gasket according to the twenty-third embodiment of the present invention is characterized in that the hoop 210 of the spiral gasket 200 of the gasket according to the twenty-first embodiment is replaced from a “W” shape to a “V” shape.
The gasket according to the twenty-third embodiment of the present invention has an effect of further simplifying the manufacturing process because the hoop 210 only needs to be folded once in the process of manufacturing the hoop 210 of the spiral gasket 200. .
Therefore, according to the gasket of the twenty-third embodiment of the present invention, the production cost of the gasket can be reduced.

FIG. 29a is a sectional view of a gasket according to a twenty-fourth embodiment of the present invention.
The gasket according to the twenty-fourth embodiment of the present invention is characterized in that the spiral-shaped gasket 200 of the gasket according to the twenty-second embodiment is replaced with a flat plate-type hoop in which a protruding portion is formed.

FIG. 30a is a sectional view of a gasket according to the 25th embodiment of the present invention.
The gasket according to the twenty-fifth embodiment of the present invention has a "V" shape among the hoops 210 of the spiral gasket 200 of the gasket according to the twenty-second embodiment. The hoop 210 located on the inside may have a “W” shape.
In the gasket according to the twenty-fifth embodiment of the present invention, high pressure around the flange pipe can be dispersed and applied by the internal “W” hoop 210 to improve the resilience. There is an effect that a desired sealing property can be secured.

FIG. 31a is a sectional view of a gasket according to a twenty-sixth embodiment of the present invention.
The gasket according to the twenty-sixth embodiment of the present invention is characterized in that the shape of the hoop 210 positioned outside the spiral gasket 200 of the gasket according to the twenty-fifth embodiment and the shape of the hoop 210 positioned inside are changed. That is, a “W” -shaped hoop is disposed outside the spiral gasket 200, and a “V” -shaped hoop is disposed inside.
Therefore, according to the gasket of the twenty-fifth embodiment of the present invention, there is an effect that a high restoring force can be secured in a special structure in which a higher pressure is applied to the outer side than the pipe line due to the structure of the flange.

FIG. 32a is a sectional view of a gasket according to a twenty-seventh embodiment of the present invention.
A gasket according to a twenty-seventh embodiment of the present invention is characterized in that, in the gasket according to the twenty-second embodiment, the square ring member 520 is replaced with an uneven ring member 530.
The concave / convex ring member 530 according to the twenty-seventh embodiment may be positioned so as to contact the outer side and the inner side of the spiral gasket 200. In addition, when the concave / convex ring member 530 is moved toward the spiral gasket 200 by pressure inside or outside the flange, the concave / convex ring member 530 has a concave / convex shape so that the hoop of the spiral gasket 200 spreads. Can do. That is, the unevenness and the groove of the uneven ring member 530 can be formed in a similar manner to the shape of the hoop of the spiral gasket 200. Can be carried out.

FIG. 33a is a sectional view of a gasket according to the twenty-eighth embodiment of the present invention.
A “V” -shaped hoop can be used as the hoop 210 of the spiral gasket 200 of the gasket according to the twenty-eighth embodiment of the present invention.
Then, an outer ring member 540 and an inner ring member 550 formed with irregularities and grooves so that a “V” -shaped hoop can be easily spread on the outer side and the inner side of the spiral gasket 200, respectively.
Accordingly, the manufacturing process of the spiral gasket 200 of the gasket can be simplified, and the outer ring member 540 and the inner ring member 550 are positioned on the outer side and the inner side of the spiral gasket 200, so that the fluid flows out from the flange joint surface. In this case, the sealing effect can be maximized while the hoop of the spiral gasket 200 spreads.

FIG. 34a is a sectional view of a gasket according to the 29th embodiment of the present invention.
The spiral gasket 200 of the gasket according to the twenty-ninth embodiment of the present invention may be provided with a “V” -shaped hoop on the outside and a “W” -shaped hoop on the inside.
Further, the outer ring member 540 may be located outside the spiral gasket 200, and the uneven ring member 530 may be located inside the spiral gasket 200. That is, the outer ring member 540 can be positioned outside the gasket so as to match the shape of the “V” -shaped hoop 210, and the concave-convex ring member 530 is similar to the concave-convex shape of the “W” -shaped hoop 210. Can be located.
Therefore, when pressure is applied from the inside or the outside of the gasket employed on the joint surface of the flange, the outer ring member 540 and the uneven ring member 530 compress the spiral gasket 200 from both sides or one side so that the hoop spreads. As a result, the sealing effect is maximized.

FIG. 35a is a sectional view of a gasket according to the thirtieth embodiment of the present invention.
In the hoop 210 of the spiral gasket 200 of the gasket according to the thirtieth embodiment of the present invention, a “W” -shaped hoop is attached to the outside of the gasket, and a “V” -shaped hoop is attached to the inside. it can.
In addition, an outer ring member 560 having two grooves may be positioned outside the spiral gasket 200, and an inner ring member 550 may be positioned inside the spiral gasket 200.
Therefore, when the fluid flows out from the joint surface of the flange, the outer ring member 540 and the inner ring member 550 can be compressed in the direction of the spiral gasket 200 so that the hoop 210 can be expanded.
Accordingly, the gasket is brought into close contact with the joint surface of the flange, and there is an effect of preventing the fluid from flowing out.

The gasket of the embodiment of the present invention may have a ring shape as a whole as shown in FIG. 3b, but is not limited thereto, and may be an oval shape, an oblong square shape, a rhombus shape (as required). (diamond) and the like.
First, the can profile 600 used in various embodiments of the present invention is formed of a high-temperature metal material so that excellent compressive force and restoring force can be maintained even under extreme conditions such as high temperature and high pressure. And can be made of stainless steel or inconel. More specifically, “stainless steel (Steel) 347”, “Inconel 825”, or the like can be applied.

However, in addition to stainless steel (SS; Stainless steel) 300 series and 400 series, it can be selected from many series and used, and other special materials such as Inconel 600 series, 700 series, and 800 series are used. Is not limited.
The gaskets of various embodiments of the present invention maintain excellent compressive force and resilience even under extreme conditions such as high temperature and high pressure by inserting a can profile 600 inside a double jacketed covering material. There is an effect that can be done. It is to be noted that such an excellent compressive force and resilience can not only achieve the effect of improving the sealing performance, but also provide a gasket that is highly resistant to gasket damage due to cold flow and overtightening pressure. be able to. In addition, by achieving such resistance, there is an effect that it is possible to provide a gasket that provides excellent stability even in installation and handling in a large size.

That is, the gasket employing the can profile 600 of various embodiments of the present invention is characterized in that it can be used at high temperature and high pressure, although its compressibility is somewhat lower than that of the spiral gasket. In addition, since the can profile 600 of the gasket according to various embodiments of the present invention serves as a stopper, it has a high wearability without damage at a flatness portion of an abnormal flange. effective. In addition, there is an effect that a sufficient surface stress can be provided without breakage even at high compressive strength. Here, sufficient surface pressure can be referred to as including severe conditions from proper bolt torque (hot torque) to hot bolting (hot bolting).
Saw-tooth members can be formed on the upper and lower surfaces of the can profile 600, respectively. Such a sawtooth member can be formed by serration, and gaskets according to various embodiments of the present invention are fastened with low clamping pressure through the sawtooth members formed on the upper and lower surfaces of the can profile 600. There is an effect of concentrating the load of the bolt on the crest portion of the saw-tooth member and maintaining a tight seal with a low tightening pressure.

Hereinafter, each drawing is a drawing showing a cut surface of each gasket in order to effectively explain the internal configuration of the gasket.
3b and 4b are views showing a gasket according to the first embodiment of the present invention and its modified form.
As can be seen from FIG. 4 b, the gasket according to the first embodiment of the present invention may include a can profile 600, an O-ring member 110, a first jacket 320, and a second jacket 310. Specifically, a can profile 600 may be seated on the first jacket 320, and an O-ring member 110 may be provided inside the can profile 600. In addition, the second jacket 310 may be bent from the top of the gasket so as to wrap a portion of the can profile 600, the O-ring member 110, and the first jacket 320.

  FIG. 3B is a view showing a modified form of the first embodiment of the present invention, in which a concave bend is formed inside the can profile 600 provided in the gasket so as to be in close contact with the O-ring member 110. An inner end 610 can be formed. Such an inner end portion 610 can prevent the can profile 600 inside the gasket from moving to the left and right and damaging the O-ring member 110, thereby achieving an effect of further improving the sealing performance of the gasket. it can.

5b to 8b are views showing a gasket according to a second embodiment of the present invention and a modified form thereof.
The gasket according to the second embodiment of the present invention may be formed to include the first jacket 320, the can profile 600, the O-ring member 110, and the second jacket 310, as can be seen from FIG. 8b. The gasket according to the second embodiment is different from the gasket according to the first embodiment in that the first jacket 320 is bent upward so that the can profile 600 and the O-ring member 110 can be accommodated therein. It is.

  FIGS. 5 b to 7 b are views showing a modified form of the second embodiment, and the gasket of FIG. 5 b is manufactured in a concave shape so that the inner end 610 of the can profile 600 can be in close contact with the O-ring member 110. This can be confirmed from the drawing, and it can be confirmed that the outer end portion 620 is formed to have a convex bend having a gentle corner. In addition, it can be confirmed that the gasket of FIG. 6B is formed so that both end portions of the can profile 600 have convex bends, and the gasket of FIG. 7B is the inner end portion of the can profile 600 inside the gasket. It can be confirmed from the drawings that only 610 is formed to have a concave bend so as to be in close contact with the O-ring member.

In the second embodiment of the present invention and its modified form, the structure that can be confirmed from the drawings prevents the first jacket 320 and the second jacket 310 from being damaged, thereby preventing external pressure. And can provide a stronger gasket.
Further, since the inside and outside of the gasket are protected by the first jacket 320 and the second jacket 310 in an overlapping manner, it is possible to provide a gasket that is stronger against external pressure and has improved sealing ability. .

9b to 12b are views showing a gasket according to a third embodiment of the present invention and a modified form thereof.
Compared with the gasket according to the second embodiment of the present invention and its deformed form, the gasket according to the third embodiment of the present invention has an O-ring member 110 disposed inside the gasket on the outside of the gasket. It is different in that it is located in the direction facing it.
That is, in the gaskets according to the first and second embodiments of the present invention, the O-ring member 110 is located on the inner side, so that the sealing performance is more effective against the pressure transmitted from the inside of the pipe flange to the gasket. In the third embodiment of the present invention, the O-ring member 110 inside the gasket is positioned on the outer side, so that the bolt tightening of the pipe flange is loosened. There is an effect that the O-ring member 110 is expanded below to ensure sealing performance.

FIGS. 13b to 14b are views showing a gasket according to a fourth embodiment of the present invention and a modified form thereof.
The gasket of the fourth embodiment of the present invention is a gasket in which the first jacket 320 is made flat compared to the gasket of the third embodiment, and can be used under lower pressure conditions. This is a gasket that can be manufactured at a lower cost by reducing the size of the jacket.

15b to 16b are views showing a gasket according to a fifth embodiment of the present invention and its modified form.
The gasket according to the fifth embodiment may include O-ring members 110 on both the inside and outside of the can profile 600. The inner end portion 610 and the outer end portion 620 of the can profile 600 may have a concave bend so as to be in close contact with the O-ring member 110.
Further, the gasket of FIG. 16b, which is a modified form of the gasket according to the fifth embodiment, is formed such that the inner end portion 610 and the outer end portion 620 of the can profile 600 all have convex bends having gentle corners. Can be done.
Therefore, the gasket according to the fifth embodiment of the present invention can maintain resistance to the pressure of the fluid in the pipeline and strong sealing performance even under a low tightening pressure by the O-ring members 110 provided on both sides of the can profile 600. Two effects can be achieved. Further, the inner end 610 and the outer end 620 of the can profile 600 formed in a concave shape or a convex shape allow the first jacket 320 or the second jacket 310 to be externally impacted. There is an effect of preventing damage.

17b to 18b are views showing a gasket according to a sixth embodiment of the present invention and a modified form thereof.
Although the basic structure of the gasket according to the sixth embodiment is similar to that of the gasket according to the fifth embodiment, the first jacket 320 is bent on the upper side of the gasket to be provided outside and inside the can profile 600. The difference is that the ring member 110 is wrapped.
In the gasket according to the sixth embodiment of the present invention, the inside and the outside of the gasket are protected by the first jacket 320 and the second jacket 310 in an overlapping manner, so that the gasket is stronger against external pressure and is not damaged. There is an effect that a gasket with less fear can be provided.

FIGS. 19b to 21b are views showing a gasket according to a seventh embodiment of the present invention and a modified form thereof.
The gasket of the seventh embodiment includes an O-ring member 110 disposed in the center of the gasket, a can profile 600 provided inside the O-ring member 110, an outer can profile 700 provided outside the O-ring member 110, a first The jacket 320 and the second jacket 310 can be formed. Here, the can profile 600 and the outer can profile 700 are substantially the same, and are merely terms for distinguishing can profiles disposed on both sides around the O-ring member 110, and are different from each other. It should be noted that the terminology is not intended to be indicative, and that it is a term used for ease of distinction in the description of the present invention.

The can profile 600 located inside the gasket according to the seventh embodiment of the present invention may be formed with an outer end 620 having a concave bend to come into close contact with the O-ring member 110. A second inner end 710 may also be formed on the outer can profile 700 located outside the gasket for intimate contact with the O-ring member 110. Also, the outer end 620 and the second inner end 710 may be formed in various shapes as can be seen from FIGS. 19b to 21b.
The O-ring member 110 located at the inner center of the gasket, the can profile 600 located inside the O-ring member 110, and the outer can profile 700 located outside the O-ring member 110 are wrapped by the first jacket 320. Can be housed inside. Further, the second jacket 310 may be bent so as to wrap the O-ring member 110, the can profile 600, the outer can profile 700, and the first jacket 320 from the upper part of the gasket.
According to the gasket of the seventh embodiment of the present invention, the pressure applied through the O-ring member located in the center of the gasket can be uniformly distributed, and the load of the fastening bolt can be sawtoothed even under a low fastening pressure. There is an effect of concentrating on the crest portion of the member to achieve higher sealing performance.

22b to 23b are views showing a gasket according to an eighth embodiment of the present invention and a modified form thereof.
The gasket according to the eighth embodiment of the present invention is similar in structure to the gasket according to the first embodiment of the present invention, but differs in that a spring 120 is provided inside the O-ring member 110. . The spring 120 can be a plate coil spring.
Due to the spring 120 employed inside the O-ring member 110, the gasket according to the eighth embodiment can secure the restoring force of the gasket and can evenly distribute the pressure applied from the outside to extend the life of the gasket. There is.
Further, as described above, when the inner end portion 610 of the can profile 600 has a concave groove portion having a radius of curvature similar to that of the O-ring member 110 so that the inner end portion 610 can come into close contact with the O-ring member 110, O The effect which can prevent that the ring member 110 is damaged can be provided together.

24b to 27b are views showing a gasket according to a ninth embodiment of the present invention and a modified form thereof.
The gasket according to the ninth embodiment of the present invention is similar in basic structure to the gasket according to the second embodiment, but is different in that a spring 120 is further provided inside the O-ring member 110. The structure has an effect of extending the life of the gasket by dispersing the externally applied pressure as described above.
Further, the gasket of the ninth embodiment also has a shape of the inner end portion 610 and the outer end portion 620 of the can profile 600 in order to prevent the O-ring member 110 or the first jacket 320 and the second jacket 310 from being damaged. It can be formed into a concave bend or a convex bend with gentle corners.

FIGS. 28b to 31b are views showing a gasket according to a tenth embodiment of the present invention and a modified form thereof.
The gasket according to the tenth embodiment of the present invention is different from the gasket according to the third embodiment of the present invention in that a spring 120, particularly a plate coil spring, is provided inside the O-ring member 110. The effects that can be achieved by such a structure are as described above.

FIGS. 32b to 33b are views showing a gasket according to an eleventh embodiment of the present invention and a modified form thereof.
In the gasket of the eleventh embodiment, a spring 120 is provided inside the O-ring member 110 of the gasket of the fourth embodiment. With such a spring 120, a better restoring force and sealing performance are achieved. be able to.

FIGS. 34b to 35b are views showing a gasket according to a twelfth embodiment of the present invention and a modified form thereof.
The gasket according to the twelfth embodiment of the present invention is characterized in that a spring 120 in the form of a plate coil spring is provided inside the O-ring member 110 of the gasket according to the fifth embodiment. It is characterized by being able to achieve a greater restoring force and sealing performance than the gasket of the above.

FIGS. 36b to 37b are views showing a gasket according to a thirteenth embodiment of the present invention and a modified form thereof.
The gasket according to the thirteenth embodiment of the present invention is also characterized in that a spring 120 is further provided inside the O-ring member 110 as compared with the gasket according to the sixth embodiment, and additional effects that can be achieved through this are described above. It is as follows.

38b to 40b are views showing a gasket according to a fourteenth embodiment of the present invention and a modified form thereof.
The gasket according to the fourteenth embodiment is different from the gasket according to the seventh embodiment in that a spring 120 is further provided inside the O-ring member 110 in order to improve the restoring force and the sealing performance.

  Hereinafter, FIGS. 41b to 71b each show a gasket having a sealing layer 800 on the first jacket 320 and the second jacket 310 in each of the above-described gaskets. Provides an effect of further improving the sealing ability of the gasket.

FIGS. 41b to 42b are views showing a gasket according to a fifteenth embodiment of the present invention and a modified form thereof.
The gasket according to the fifteenth embodiment of the present invention is characterized in that a seal layer 800 is further provided on the first jacket 320 and the second jacket 310 of the gasket according to the first embodiment. The sealing layer 800 may be formed of any one or a combination of graphite, mica, polytetrafluoroethylene (PTFE), silver, stainless steel spray, and ceramic. Can do.
The gasket according to the fifteenth embodiment of the present invention can maintain the adhesion of the joint surface between the gasket and the flange more firmly with the effect of the gasket according to the first embodiment by the seal layer 800 as described above. It is possible to provide a further improved sealing performance.

FIGS. 43b to 46b are views showing a gasket according to a sixteenth embodiment of the present invention and a modified form thereof.
The gasket according to the sixteenth embodiment of the present invention is characterized in that a seal layer 800 is further provided on the first jacket 320 and the second jacket 310 of the gasket according to the second embodiment. The layer 800 has an effect of further improving the sealing performance of the gasket by further maintaining the tight adhesion of the joint surface between the gasket and the flange.

FIGS. 47b to 50b are views showing gaskets according to the seventeenth embodiment and modified forms thereof.
The gasket according to the seventeenth embodiment of the present invention also includes a seal layer 800 on the first jacket 320 and the second jacket 310 of the gasket according to the third embodiment in order to improve the sealing performance. Features.

51b to 52b are views showing a gasket according to the eighteenth embodiment and its modified form.
The gasket according to the eighteenth embodiment of the present invention is the same as the gasket according to the fourth embodiment, and is characterized in that a seal layer 800 is further provided on the first jacket 320 and the second jacket 310.

53b to 54b are views showing a gasket according to the nineteenth embodiment and its modified form.
The gasket according to the nineteenth embodiment of the present invention is also provided with a seal layer 800 on the outer surface of the gasket according to the fifth embodiment, and has an effect of providing a more stable sealing effect than the gasket according to the fifth embodiment. .

FIGS. 55b to 56b are views showing a gasket according to the twentieth embodiment and its modified form.
The gasket according to the twentieth embodiment of the present invention is the gasket according to the sixth embodiment, wherein a seal layer 800 is further provided on the first jacket 320 and the second jacket 310 of the gasket. It is.

FIGS. 57b to 59b are views showing a gasket according to the twenty-first embodiment and its modified form.
The gasket according to the twenty-first embodiment of the present invention is the gasket according to the seventh embodiment, further comprising a seal layer 800 on the first jacket 320 and the second jacket 310. The effects that can be achieved by this are as described above.

FIGS. 60b to 61b are views showing a gasket according to the twenty-second embodiment and a modified form thereof.
The gasket according to the twenty-second embodiment further includes a seal layer 800 on the first jacket 320 and the second jacket 310 of the gasket according to the eighth embodiment in order to improve the sealing performance. It is.

62b to 65b are views showing a gasket according to the 23rd embodiment and its modified form.
The gasket according to the 23rd embodiment of the present invention is characterized in that the gasket according to the ninth embodiment is further provided with a seal layer 800 in order to improve the sealing performance.

66b to 69b are views showing a gasket according to the twenty-fourth embodiment and a modified form thereof.
The gasket according to the twenty-fourth embodiment of the present invention is characterized in that a seal layer 800 is further formed on the first jacket 320 and the second jacket 310 of the gasket according to the tenth embodiment.

FIGS. 70b to 71b are views showing a gasket according to the 25th embodiment and its modified form.
The gasket according to the 25th embodiment of the present invention is characterized in that the gasket according to the 11th embodiment further includes a seal layer 800.

  Hereinafter, FIGS. 72b to 76b show a state of the gasket characterized in that seal layers are formed above and below the can profile in the jacket. The gasket according to the embodiment may have an effect of preventing the can profile 600 from being damaged by external pressure through the inner seal layer 810 formed on the upper and lower surfaces of the can profile 600.

  FIG. 72b is a view showing a gasket according to a twenty-sixth embodiment, and is characterized in that an inner seal layer 810 is formed on each of the upper and lower surfaces of the can profile 600 in the gasket according to the first embodiment.

  FIG. 73b is a view showing a gasket according to a twenty-seventh embodiment. In the gasket according to the tenth embodiment, an inner seal layer 810 is provided on each of the upper surface and the lower surface of the can profile 600.

  FIG. 74b is a view showing a gasket according to the twenty-eighth embodiment. The gasket according to the eleventh embodiment is characterized in that an inner seal layer 810 is further provided on the upper and lower surfaces of the can profile 600.

FIG. 75b is a drawing showing a gasket according to the twenty-ninth embodiment. The gasket according to the fourteenth embodiment is characterized in that an inner seal layer 810 is further provided on the upper and lower surfaces of the can profile 600.
The effects that can be achieved by this are as described above.

  FIG. 76b is a view showing a gasket according to the 30th embodiment. The gasket according to the 3rd embodiment is characterized in that an inner seal layer 810 is further provided on the upper surface and the lower surface of the can profile 600.

In the following, FIGS. 77b to 80b are diagrams showing an embodiment of a gasket that not only includes the seal layer 800 on the gasket jacket, but also includes the inner seal layer 810 on the upper and lower surfaces of the inner can profile 600, respectively. is there.
Therefore, the gasket of such an embodiment can provide a higher sealing capability through the seal layer 800 formed on the jacket, and through the inner seal layer 810 formed on the upper and lower surfaces of the can profile 600 inside the gasket. The can profile 600 can be prevented from being damaged by the external pressure.

  FIG. 77b shows the gasket according to the thirty-first embodiment. The gasket according to the fifteenth embodiment is characterized in that an inner seal layer 810 is further provided on the upper and lower surfaces of the can profile 600.

  FIG. 78b shows a gasket according to the thirty-second embodiment. In the gasket according to the twenty-seventh embodiment, a seal layer 800 is further formed on the first jacket 320 and the second jacket 310. Features.

  FIG. 79b shows a gasket according to the 33rd embodiment. In the gasket according to the 28th embodiment, a seal layer 800 is further formed on the first jacket 320 and the second jacket 310. Features.

  FIG. 80 b is a view showing a gasket according to a thirty-fourth embodiment. In the gasket according to the twenty-ninth embodiment, a seal layer 800 is further formed on the first jacket 320 and the second jacket 310. Features.

  FIG. 81b is a view showing a gasket according to a 35th embodiment, in which a sealing layer 800 formed on the first jacket 320 and the second jacket 310 of the gasket according to the 17th embodiment, and the inside of the gasket are shown. It includes an inner seal layer 810 formed on the upper and lower surfaces of the can profile 600, respectively.

The gasket of the embodiment of the present invention may have a ring shape as a whole as shown in FIG. 3c, but is not limited thereto, and may be an oval shape, an oblong square shape, a rhombus shape (as required). (diamond) and the like.
First, the can profile 10 used in various embodiments of the present invention is formed of a high-temperature metal material so that excellent compressive force and restoring force can be maintained even under extreme conditions such as high temperature and high pressure. And can be made of stainless steel or inconel. More specifically, “stainless steel (steel) 347”, “inconel 825”, or the like may be applied.

Hereinafter, each drawing is a drawing showing a cut surface of each gasket in order to effectively explain the internal configuration of the gasket.
2c to 3c are views showing a gasket according to a first embodiment of the present invention and a modified form thereof.
The gasket according to the first embodiment of the present invention includes a can profile 10, a C ring end portion 11 formed inside the can profile 10, and an O ring member 20 accommodated in the C ring end portion 11. it can.
In addition, sawtooth members can be formed on the upper and lower surfaces of the can profile 10 respectively. Such a sawtooth member can be formed by serration, and gaskets according to various embodiments of the present invention are fastened under low tightening pressure through sawtooth members formed on the upper and lower surfaces of the can profile 10. There is an effect of concentrating the load of the bolt on the crest portion of the saw-tooth member and maintaining a sealing performance without a gap even under a low tightening pressure.
In addition, the gasket according to the first embodiment of the present invention forms the C-ring end portion 11 inside the can profile 10 so that the O-ring member 20 can be easily attached to one side of the can profile 10 without an external jacket. There is an effect that can be fixed and attached to. Further, such an O-ring member 20 has an effect of improving the restoring force of the gasket by providing the gasket with a large yield.

  The gasket of FIG. 3c may further comprise a length adjusting end 13 outside the can profile 10 of the gasket of the first embodiment. Such a length adjusting end portion 13 is a portion where no sawtooth member is formed, and can be used when adjusting the size of the gasket in accordance with the size of the flange.

4c to 5c are views showing a gasket according to a second embodiment of the present invention and a modified form thereof.
The gasket according to the second embodiment of the present invention is characterized in that a hoop support end 12 is formed on the outer side of the can profile 10 of the gasket, and such a hoop support end 12 effectively contacts the hoop 30. A concave groove may be provided for support.
The gasket hoop 30 according to the second embodiment of the present invention can be made of a zigzag cross section and an elastic metal strip, and has two peaks and one valley as can be seen from FIG. 4c. It can be manufactured in a “W” shape. Further, the two peaks of the hoop 30 are formed so as to face the outer side of the gasket, and when the fluid flows out from the flange pipe, the hoop 30 spreads due to the pressure of the fluid to prevent additional outflow. Can perform the function to be performed.

Also, the hoop 30 applied to the gaskets of various embodiments of the present invention can be formed in a “W” shape with three folds. Since such a “W” -shaped hoop 30 has three fold portions, the pressure applied from the outside of the gasket is uniformly distributed and applied to each fold portion, so that the hoop 30 has an external pressure. It is possible to prevent the loss of resilience by surrendering to
In addition, the direction of the two peaks of the hoop 30 can be arranged so as to face the outer side of the gasket. Therefore, the hoop support end portion 12 can effectively store one valley of the hoop 30 in a concave portion that is a concave groove portion and prevent the hoop 30 from being detached to the outside.
FIG. 5 c shows an example in which the state of the hoop support end 12 is modified in the gasket according to the second embodiment. Such a modification of the second embodiment has an effect that the hoop can be supported more firmly by forming the depth of the concave portion of the hoop support end portion 12 deeper.

6c to 7c are views showing a gasket according to a third embodiment of the present invention.
The gasket according to the third embodiment of the present invention is characterized in that a filler 31 is filled between the hoops 30. Such a filler 31 can be composed of graphite, but is not limited thereto, and can be composed of any one of graphite, ceramic, and mica, or a combination thereof. That is, non-asbestos materials can be used.
Further, the non-metallic material filler 31 used in various embodiments of the present invention functions to maintain the residual stress of the hoop 30 constant while the hoop 30 undergoes plastic deformation.

FIG. 7c is a view showing a modification of the gasket according to the third embodiment of the present invention. The hoop support end 12 has a deeper recess than the gasket of FIG. It is possible to provide an effect of closely supporting.
Further, in the gasket of various embodiments of the present invention, a spring 40 can be inserted into the C-ring end portion 11 of the can profile 10 instead of the O-ring member 20. In addition, the gaskets of various embodiments of the present invention can be uniquely used without inserting the O-ring member 20 and the spring 40 inside the C-ring end portion 11 of the can profile 10. Such a C-ring end portion 11 of the can profile 10 can perform a role of improving sealing performance by performing a self-energizing role in a situation where pressure is applied from the outside.

8c to 9c are views showing a gasket according to a fourth embodiment of the present invention and a modification thereof. The gasket according to the fourth embodiment is disposed inside the O-ring member 20 of the gasket according to the first embodiment. A spring 40 is provided. Further, a plate coil spring can be adopted as such a spring 40.
With such a spring 40, the gasket according to the fourth embodiment can secure the restoring force of the gasket, and can achieve the effect of extending the life of the gasket by uniformly dispersing the pressure applied from the outside.

10c to 11c are views showing a gasket according to a fifth embodiment of the present invention and its modification.
The gasket according to the fifth embodiment is characterized in that the gasket according to the second embodiment further includes a spring 40 inside the O-ring member 20, and the effects that can be achieved by such a spring 40 are as described above. .

12c to 13c are views showing a gasket according to a sixth embodiment of the present invention and its modification.
The gasket according to the sixth embodiment is the same as the gasket according to the third embodiment, further comprising a spring 40 inside the O-ring member 20.

Hereinafter, FIGS. 14c to 25c are views showing an embodiment of a gasket in which the camprofal 10 has a convex shape.
14c to 15c are views illustrating a gasket according to a seventh embodiment of the present invention and a modified example thereof.
The can profile 10 of the gasket according to the seventh embodiment is characterized in that the upper surface and the lower surface are formed to be convex. Further, the saw-tooth members formed on the upper and lower surfaces of the can profile 10 are formed intermittently. That is, the feature is that the crests of the sawtooth member do not continue continuously, but a horizontal region is formed between the crests.

Also, the height of each crest of such a sawtooth member can be substantially the same. In other words, the upper surface and the lower surface of the can profile 10 are generally convex, but the heights of the sawtooth member peaks formed on the upper surface and the lower surface are substantially the same, and the flange surface Uniform contact is possible.
Therefore, the gasket according to the seventh embodiment has a convex shape as a whole, so that the pressure applied from the outside can be dispersed efficiently, and the saw-tooth members formed on the upper and lower surfaces of the can profile 10 can be used. The effect of maintaining high sealing performance even under a low tightening pressure can be achieved.
FIG. 15 c is a view showing a modification of the seventh embodiment, and shows that the length adjusting end 13 is formed in the outer direction of the can profile 10, and the effect is as described above.

16c to 17c are views showing a gasket according to an eighth embodiment of the present invention and a modified form thereof.
The gasket according to the eighth embodiment is characterized in that a hoop support end portion 12 is formed in the outer direction of the can profile 10 and the hoop 30 is formed in close contact with the hoop support end portion 12. To do. FIG. 17c shows an example of a gasket in which a hoop support end 12 having a deeper recess is formed.

  18c to 19c are views showing a gasket according to a ninth embodiment of the present invention and a modification thereof, wherein the can profile 10 is convexly formed in the gasket according to the third embodiment. It is drawing which shows the mode of a gasket, The effect is as above-mentioned.

20c to 21c are views showing a gasket according to a tenth embodiment of the present invention and a modified form thereof.
The gasket of the tenth embodiment is characterized in that a spring 40 is further provided inside the O-ring member 20 of the gasket of the seventh embodiment in order to improve the restoring force of the gasket. Further, the gasket of FIG. 21 c is characterized in that a length adjusting end 13 is further formed in the outer direction of the can profile 600.

22c to 23c are views showing a gasket according to an eleventh embodiment of the present invention and a modified form thereof.
The gasket according to the eleventh embodiment is also characterized in that a spring 40 is further provided inside the O-ring member 20 of the gasket according to the eighth embodiment in order to improve the restoring force.

24c to 25c are views showing a gasket according to a twelfth embodiment of the present invention and a modified form thereof.
The gasket according to the twelfth embodiment is characterized in that, in addition to the gasket according to the ninth embodiment, the spring 40 is further located inside the O-ring member 20, and the effects thereof are as described above.

26c to 49c are views showing that the C-ring end portion 11 of the can profile 10 is formed on the outer side of the gasket.
In the gasket of such an embodiment, the C-ring end portion 11 of the can profile 10 is formed in the outward direction, so that the O-ring member 20 is positioned on the outer side of the gasket and applied from the outside of the pipe flange. There is an effect of providing toughness against. That is, when the O-ring member 20 is positioned on the inner side, the O-ring member 20 is positioned on the outer side of the gasket as well as performing the role of efficiently blocking the pressure applied from the flow path side of the pipe line. By doing so, the gaskets of the various embodiments of the present invention can provide a gasket that is more resistant to external impacts.

  26 to 27 are views showing a gasket according to a thirteenth embodiment of the present invention and a modified form thereof. The C-ring end portion 11 is accommodated in the C-ring end 11 as compared with the gasket according to the first embodiment. The O-ring member 20 is positioned at the outer portion of the gasket.

  28c to 29c show a gasket according to a fourteenth embodiment of the present invention. In the gasket of the eighth embodiment, the positions of the C-ring end 11 and the O-ring member 20 are moved from the inside to the outside. It is characterized by that.

  30c to 31c are views showing a gasket according to a fifteenth embodiment of the present invention. In the gasket according to the ninth embodiment, the positions of the C-ring end 11 and the O-ring member 20 are changed in opposite directions. It is characterized by that.

  32c to 33c are views showing a gasket according to a fifteenth embodiment of the present invention and a modified form thereof. In order to improve the sealing performance of the gasket, the O-ring member 20 of the thirteenth embodiment is shown. A spring 40 is further provided inside.

  34c to 35c are views showing a gasket according to a sixteenth embodiment of the present invention and a modified form thereof, and the directions of the O-ring member 20 and the hoop 30 of the gasket according to the eleventh embodiment are outward. 36c to 37c show a gasket according to a seventeenth embodiment of the present invention, and further includes a filler 31 between the hoops 30 of the gasket according to the sixteenth embodiment. And

  FIGS. 38c to 39c are views showing a gasket according to the 18th embodiment and a modified form thereof, and the C-ring end 11 and the O-ring member 20 of the gasket of the seventh embodiment are moved to the outside of the gasket. It shows that.

  40c to 41c are views showing a gasket according to the nineteenth embodiment and a modified form thereof, in which the C-ring end 11 and the O-ring member 20 of the gasket according to the second embodiment are arranged in the outer direction of the gasket. It is drawing which shows having been located.

  42c to 43c are views showing a gasket according to the twentieth embodiment and its modified form, wherein each structure of the gasket according to the third embodiment is shown in a state of being moved symmetrically. .

  44c to 45c are views showing a gasket according to the 21st embodiment and a modified form thereof. In order to further improve the restoring force, the gasket 18 according to the 18th embodiment has an O-ring member 20 formed therein. A spring 40 is further provided.

  46c to 47c are views showing a gasket according to the twenty-second embodiment and its modified form, in which a spring 40 is similarly provided in the O-ring member 20 of the gasket according to the nineteenth embodiment. Show. As such a spring 40, a plate coil spring can be adopted and used.

  FIGS. 48c to 49c are views showing a gasket according to the 23rd embodiment and a modified form thereof, in which a spring 40 is provided inside the O-ring member 20 in order to achieve a high sealing performance through an improvement in restoring force. It is drawing characterized by further providing.

FIGS. 1d to 4d are views illustrating a gasket according to another embodiment of the present invention.
In FIGS. 1d to 4d, the right side of the drawings shows the inner direction of the gasket, and the left side shows the outer direction. Also, a spring inside the O-ring member positioned in the outer direction of the gasket according to a preferred embodiment of the present invention can be selectively provided, and a plate coil spring can be adopted as the corresponding spring. The can profile 600 according to another embodiment of the present invention can selectively form a sawtooth member. Such a saw-tooth member can perform the role of preventing the fluid flowing through the pipe from leaking to the outside by concentrating the pressure applied under the low tightening pressure on the peak of the saw-tooth member. Also, the spiral gasket 200 formed of gasket hoops and fillers according to various embodiments of the present invention may be located inside or center within the jacket, with the two crests of the hoop facing outward. When the fluid flowing out of the pipe line of the flange is generated, the hoop spreads by the pressure, and the fluid can be prevented from leaking to the outside. That is, the gaskets according to various embodiments of the present invention can further improve the sealing performance by performing the complementary roles of the can profile 600 and the spiral gasket 200.

  Although the present invention has been described with reference to the preferred embodiments, those skilled in the art will recognize that the present invention is within the scope and spirit of the invention described in the claims. It can be understood that the invention can be modified and changed in various ways.

DESCRIPTION OF SYMBOLS 1 Tube 2 Flange 5 Conventional spiral gasket hoop 6 Conventional spiral gasket filler 10 Can profile 11 C ring end 20 O ring member 12 Hoop support end 13 Length adjustment end 30 Hoop 31 Filler 40 Spring 110 O-ring member 111 C-ring member 120 Core spring 121 Plate coil spring 122 Coil spring 200 Spiral gasket 210 Hoop 220 Filler 310 Second jacket 320 First jacket 410 Third seal layer 411 Internal seal layer 420 External seal layer 421 First Seal layer 422 Second seal layer 510 Ring member 520 Square ring member 530 Concavity and convexity ring member 540 External ring member 550 Internal ring member 560 External ring member having two groove portions 600 Can profile Il 610 Inner end 620 Outer end 700 Outer can profile 710 Second inner end 800 Seal layer 810 Inner seal layer

Claims (20)

A gasket interposed between flanges, which are connection sites between the tubes,
The gasket is
Can profile (kammprofile);
A gasket comprising: a C-ring end portion formed inside the can profile; and an O-ring member provided in the C-ring end portion. A gasket interposed between flanges, which are connection parts between tubes,
The gasket is
Kang profile;
A gasket comprising: a C-ring end formed outside the can profile; and an O-ring member provided in the C-ring end. Saw teeth are formed on the upper surface of the can profile,
The gasket according to claim 1 or 2, wherein a saw tooth is formed on a lower surface of the can profile.   The gasket according to claim 3, wherein the sawtooth is formed through a serration process. The upper surface of the can profile is formed in a convex shape,
The gasket according to claim 1 or 2, wherein a lower surface of the can profile is formed to be convex.   The gasket according to claim 1, further comprising a spring provided inside the O-ring member.   The gasket according to claim 6, wherein the spring is a coil spring.   The gasket of claim 1, further comprising: an outer hoop support end formed on the outside of the can profile.   The gasket according to claim 8, wherein the outer hoop support end portion is formed with a V-shaped groove for accommodating a concave portion of the hoop. A hoop member in close contact with the outer hoop support end;
The hoop member is formed in a W (w) shape composed of two peaks and one valley,
The gasket according to claim 8, wherein the two crests of the hoop member face the outside of the gasket.   The gasket according to claim 10, wherein a filler is filled between the hoops of the hoop member.   The gasket of claim 11, wherein the filler is formed of any one of graphite, ceramic, and mica, or a combination thereof. The stage where a can profile is prepared;
A gasket manufacturing method, comprising: forming a C-ring end inside the can profile; and mounting an O-ring member inside the C-ring end. Saw teeth are formed on the upper surface of the can profile,
The gasket manufacturing method according to claim 13, wherein saw teeth are formed on a lower surface of the can profile.   The method of claim 14, wherein the sawtooth is formed through serration. After the step of attaching an O-ring member inside the C-ring end,
The method of claim 13, further comprising forming an outer hoop support end having a V-shaped groove for accommodating a recess of the hoop on the outer side of the can profile. After the step of forming an outer hoop support end with a V-shaped groove for receiving a hoop recess outside the can profile,
The method of manufacturing a gasket according to claim 16, further comprising a step of closely attaching a hoop member to the outer hoop support end. The hoop member is formed in a double shape consisting of two peaks and one valley,
The gasket manufacturing method according to claim 16, wherein the two crests of the hoop member face the outside of the gasket.   The gasket manufacturing method according to claim 16, wherein a filler is filled between the hoops of the hoop member.   The method of claim 19, wherein the filler is formed of any one of graphite, ceramic, and mica, or a combination thereof.