2 Ply Silicone coated fiberglass fabric. Two layers of heavy duty Silicone Coated Fiberglass are bonded together. Superior release characteristics, particularly with sticky substances. High heat, chemical resistance and durability. 2 Ply and 3 Ply Silicone Coated Fabric can be custom made into curtains, flaps, belts. Used in furnace tunnels, curtains, flaps and other applications with high heat, high durability requirements. Can be die cut into gaskets, strips, washers, insulators. Nominal thickness: .042" . Colors: Red, White, Black. Standard widths 40", 50"; Friction Surface.