1. Quality : E-Grade glass fiber with silicone rubber coating. 2. Characters : Fireproof, high temperature resisting(260c-550c), high voltages resisting(7kv-17. 7kv), oil and water proof, heat insulation, flame retardant, molten splash resistant. 3. Rate voltage :7-17.7kv. 4. Temperature :260c-550c(continues), 1650c(short time exposure). 5. Id:10mm-130mm. 6. Thickness :1. 8mm-6.0mm. 7. Color : Typically in red color, available in different colors.