Sponge Silicone Gaskets

Sponge silicone gasket products are soft in comparison to solid silicone gaskets, though there is some cross-over at the low durometer solids and the firm grades of silicone sponge. The firmness of silicone sponges is commonly defined by compression force deflection in a psi (pounds per square inch) range compressed 25%. 2 to 5 psi compression force deflection is considered soft, whereas 14 to 20 psi is considered firm. The closed cell structure make silicone sponge an excellent product for environmental seals such as NEMA 4 and IP64 and IP65. Silicone by nature performs well under UV and is mechanically stable over a broad temperature range, often considered for high temperature gaskets and low temperature gaskets.