Norseal silicone rubber reinforced with fiberglass increases the product’s dimensional stability for high-pressure applications, while functioning over a wide temperature range. Most products feature different solid silicone rubber durometers (hardness) on both sides of the fiberglass reinforcement. We also offer a product with a closed cell silicone sponge on both sides of the fiberglass substrate. Materials can be supplied in yard goods and sheets, with and without pressure-sensitive adhesive on one side.Thicknesses range from .032” (.81mm) up to .125” (3.17mm). Products are designed for various ranges of pressure and temperature resistance.