Gasket Characteristics
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.
Related Topics
• Piping Systems
Calculate dimensions of pipes and tubes. Pressure drop calculations and head loss charts. Use of different piping materials. Insulation of pipes and tubes and heat loss diagrams.
Related Documents
Carbon and Stainless Steel Flanges - ASME/ANSI Class 400
ASME/ANSI B16.5-1996 Pipe Flanges and Flanged Fittings - Class 400 Flanges - outside and inside diameters, bolt circles, numbers and diameters of bolts.
Elastomers
Natural and syntetic rubbers guide.
Flanges - API vs. ASME/ANSI
API and ASME/ANSI flanges - comparing dimensions and pressure ratings.
Gasket Characteristics
Gaskets are used to make a fluid or gas resistant seal between two surfaces.
Gasket Characteristics
Gaskets are used to make a fluid or gas resistant seal between two surfaces.
Gaskets - Temperature Ratings
Temperature ratings for gaskets materials.
JIS - Flanges, Bolts, Nuts, and Gaskets Standards
Japanese industrial flanges, bolts, nuts, and gaskets standards and specifications from JAS - the Japanese Standards Association.
Pipe Flanges and Gaskets - Dimensions
Gasket dimensions according ASME B16.5 Pipe Flanges and Flange Fittings.
Steel Pipe Flanges for Waterworks Services
Steel Pipe Flanges for Waterworks Services according ANSI/AWWA C207-01.