cable insulation sleeve Breakdown Voltage:10~12KV Coating: Silicone Rubber Wire/cable Protection Protective hose firesleeves namely is Silicone rubber coated fiberglass sleeve(sleeving) - Protects hoses, cables and wires from molten metal splash, high heat hazards and occasional exposure to flame, in steel plants,glass plants, foundries, cutting and welding shops and wherever hoses, cables and ...