Gasket Characteristics

Gaskets are used to make a fluid or gas resistant seal between two surfaces

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Choice of gasket is decided by

Temperature, pressure and the corrosive nature of the fluid or gas
Maintenance operations
Environment requirements (asbestos is banned in many countries)
Cost of the material

The table below can be used as an indication of some common gasket materials and their limitations.

For full table with metric units - rotate the screen!

Gasket Material	Used for Products	Maximum Temperature (^oF)	Maximum Pressure (psi)	Maximum Temperature * Pressure (^oF psi)*	Maximum Temperature (^oC)	Maximum Pressure (bar)	Maximum Temperature * Pressure (^oC bar)*
Synthetic rubbers	water, air	250	60	15 000	121	4	496
Vegetable fiber	oil	250	160	40 000	121	11	1 322
Synthetic rubbers with inserted cloth	water, air	250	500	125 000	121	34	4 130
Solid Polytetrafluoroethylene (PTFE)	chemicals	500	300	150 000	260	20	5 320
Compressed Asbestos ¹⁾	most	750	333	250 000	399	23	9 068
Carbon Steel	high pressure fluids	750	2 133	1 600 000	399	145	58 036
Stainless Steel	high pressure or corrosive fluids	1200	2 500	3 000 000	649	171	110 636
Spiral wound
SS/Polytetrafluoroethylene (PTFE)	chemicals	500	500	250 000	260	34	8 866
CS/Asbestos ¹⁾	most	750	333	250 000	399	23	9 068
SS/Asbestos ¹⁾	corrosive	1200	208	250 000	649	14	9 220
SS/Ceramic	hot gases	1900	132	250 000	1038	9	9 313

¹⁾ Note! - It is known that prolonged inhalation of asbestos fibers can cause serious and fatal illnesses including lung cancer, mesothelioma, and asbestosis. Asbestos is not legal to use in many countries.

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