High Temperature Gaskets
Stockwell Elastomerics manufactures custom high temperature gaskets from various high temperature gasket materials to specification.
"High temperature" is a relative term as it pertains to gasketing. In the world of elastomers, 350°F (177°C) is considered high temperature because this is the maximum operating temperature for many off the shelf "rubber" products. There are a few materials that are readily available which have operating temperatures in the 400 – 500°F (204 – 260°C) range with intermittent temperature up to 600°F (333°C). In the case of elastomeric / elastomer gaskets, silicone, fluorocarbon EPDM and fluorosilicone are among the best high temperature performers. At operating temperatures over 400°F (204°C), these materials maintain their mechanical properties. This means high temperature gaskets and pads will continue to perform as designed without reversion.
General Operating Temperatures for Common Materials*
Urethane: less than 250°F (121°C)Natural Rubber: less than 250°F (121°C)
Chloroprene (Neoprene): less than 300°F (149°C)
Nitrile (Buna-N): less than 300°F (149°C)
EPDM: less than 400°F (204°C)
Fluorosilicone: 400 – 500°F (204 – 260°C)
Fluorocarbon: 400 – 500°F (204 – 260°C)
Silicone: 400 – 500°F (204 – 260°C)
* Temperatures are general, values will vary with grade. Refer to specific specifications for actual product temperature ratings.
EPDM, fluorosilicone, fluorocarbon, and silicone are considered high temperature rubber materials. EPDM and silicone are readily available in sheet stock form (solid, closed cell sponge, and open cell foam). Silicone may also be injection molded or compression molded in various hardnesses, from as low as 10 durometer to 80 durometer on the Shore "A" scale. If very low temperatures are required, silicone or fluorosilicone would be the best choice. Fluorocarbon and fluorosilicone are generally readily available; however, these are rather costly specialty products used where chemicals and fuels are present.
High Temperature Gaskets or High Temperature Rubber Gaskets or High Temperature Silicone Gaskets?
We see high temperature gaskets frequently called high temperature rubber gaskets, high temperature silicone gaskets, high temperature silicone rubber gaskets or even just high temp gaskets. Although various elastomeric materials would be used, not natural rubber, rubber is still sometimes used to refer to these gaskets.
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Contact Us for further assistance with custom high temperature gaskets.
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