Teflon/Fiberglass Cloth – Style 650 is an PTFE impregnated fiberglass fabric engineered for the harsh environments found in many industrial facilities including acid plants, paper mills, and petrochemical plants. Designed for standard duty, this abrasion resistant jacketing has proven very durable in removable insulation pad service. Teflon/Fiberglass Cloth Style 650 sews easily and has excellent non-flammability properties.