... :2004 Cenrificate and UL Test. Fiberglass insulation sleeving is braided from E-glass fiber,then coated with different materials and treated under different ... .Also called:Insulation Sleeving,Electrical Coated Fiberglass Sleeving,inside Rudbber outside Fiber,Fiberglass Sleeving Coated with Silicone Rubber,Silicone Rubber Coated Fiberglass Sleeving,etc.Application:insulating protection ...