Heat-resistant waterproof elastic silicone rubber fire o ring

An elastic silicone rubber ring can provide a compliant sealing section in a joint that experiences heat and water exposure. The compound and surrounding geometry need to be chosen for the actual operating cycle, including the temperature at the seal itself. Any fire performance requirement belongs to a defined material and complete assembly assessment under the relevant conditions.

Match the ring's section and installed diameter to its groove. As mating parts heat and cool, the available space may change, so assess contact at the important operating states rather than only during initial assembly. Keep the section supported where pressure could otherwise push it into a gap.

Install without twist and protect the surface from sharp shoulders along the fitting path. Inspect the joint after representative use for displacement or a persistent change in shape. If sealing changes with temperature, review the changing gap and material selection together. A larger ring should not be used as an automatic remedy, since it can create excessive compression when the joint returns to another operating condition.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. A larger ring should not be used as an automatic remedy, since it can create excessive compression when the joint returns to another operating condition.

Custom dimensions

Match the ring's section and installed diameter to its groove.

Fit & assembly

As mating parts heat and cool, the available space may change, so assess contact at the important operating states rather than only during initial assembly.

Use & inspection

Inspect the joint after representative use for displacement or a persistent change in shape.

Photos illustrate structure or material only. An elastic silicone rubber ring can provide a compliant sealing section in a joint that experiences heat and water exposure. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.