... ,rubber 2.Feature:fiber inside and rubber outside fiberglass sleeving(inside):Instr: Performance parameter: Pressure resistanc:4000V/7000V ... rubber fiberglass (fiber inside and rubber outside) sleeving, woven as sleeving by non-alkali fiberglass and coated with silicone ... , automatic quench and softness than silicone rubber fiberglass sleeving, widely used in the insulation protection of internal ...