... 2004 Cenrificate and UL Test. Fiberglass insulation sleeving is braided from E-glass fiber,then coated ... called:Insulation Sleeving,Electrical Coated Fiberglass Sleeving,inside Rudbber outside Fiber,Fiberglass Sleeving Coated with Silicone Rubber,Silicone Rubber Coated Fiberglass Sleeving,etc.Application ... .8550Max30-----Good flexibilityGood insulation Fiberglass Sleeving Coated with Silicone Rubber,