The heat shield tubing is mainly applied to insulate and heat equipment such as motor, engine, plug wire, fuel lines, decorative light, etc., This heat sleeve fiberglass are for high temperature applications also it keeps wire neat and organized., These Unvarnished Fiberglass Sleeve with its good dielectric strength flexibility and flame retarding properties make these sleeves high-performance qualities., Silicone Resin Coated Fiberglass Sleeving,