Compare Silicone Sponge To Silicone Foam

Silicone Sponge

Silicone sponge, or closed cell silicone sponge, is derived from a thin sheet of uncured silicone gum. The silicone gum compound is mixed with pigment and other ingredients during a rigorous mixing process. The still uncured silicone is then rolled into thin sheets and heat cured in a high temperature press or similar procedure.

At this point in the process, the silicone expands. The product is then often submitted to an additional four hour post-curing process at 480°F in a hot-air, circulating oven to enhance the compression set properties and reduce the incidence of out-gassing in the final assembly.

Typically, the silicone is cured on a Teflon-coated, fiberglass bleeder cloth. Doing this allows gasses to escape as the View the rest of this article