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Gasket Characteristics

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

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 Characteristics for Different Materials
Gasket MaterialUsed for ProductsMaximum 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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