Molded EPDM heat-resistant rubber gaskets/silicone seal washer

Heat-resistant rubber gaskets must be selected around the temperature and exposure at the actual joint. EPDM and silicone formulations can be considered for different defined conditions, but neither material name establishes a universal thermal range. The gasket's section and contact geometry also affect the finished assembly.

Check how the joint closes and where compression is applied. A washer-style seal and a larger shaped gasket may need different support, even under similar temperatures. The sealed medium and any cleaning process should be evaluated with the chosen compound and mating parts.

Install on clean faces without trapping particles or folding a narrow section. Assess the completed joint through the relevant operating conditions rather than relying only on its cold fit. During maintenance, inspect for changes in shape, cracking or an uneven contact pattern. Replace using the intended new-part geometry and formulation so a worn profile is not mistaken for the correct dimensions after repeated exposure to the service temperature.

Material options

EPDM / Silicone. Custom formulation and color for the intended contact conditions.

Hardness selection

Rubber: 30–90 Shore A. Silicone: 20–80 Shore A. Check how the joint closes and where compression is applied.

Custom dimensions

A washer-style seal and a larger shaped gasket may need different support, even under similar temperatures.

Fit & assembly

Assess the completed joint through the relevant operating conditions rather than relying only on its cold fit.

Use & inspection

Replace using the intended new-part geometry and formulation so a worn profile is not mistaken for the correct dimensions after repeated exposure to the service temperature.

Photos illustrate structure or material only. The gasket's section and contact geometry also affect the finished assembly. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.