FIELD: machine building.
SUBSTANCE: flat sealing gasket comprises annular element from elastic deformable material and plating coat from fluorocarbon polymer material. Annular element is made of expanded graphite rolled to density of 1.0-1.8 g/cm3, and plating coat is made as double-layer from porous polytetrafluoroethylene, at that internal layer of polytetrafluoroethylene from the side of expanded graphite has porosity of 30-40%, and external layer of polytetrafluoroethylene has porosity of 50-60%.
EFFECT: higher reliability of joints.
12 cl, 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2387901C1 |
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|
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|
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RU2309313C1 |
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RU2262021C2 |
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|
RU2301365C1 |
