Silicone Coated Fiberglass (500° F)
This consists of fiberglass material coated with silicone rubber, making it extremely flexible. It meets military specifications Mil-Y-1140C and provides superior insulation in terms of heat and electricity. It also resists oil, puncturing, and water. This material comes in grey and either 17oz or 32oz weight. It is also available for welding curtains, heat shields, and custom equipment covers. It is often used for fire blankets, removable insulation covers, expansion joints, and insulation at high temperatures.