Silicone Coated Fiberglass Sleeving 1.1500-4000 Volt 2. 155 Temperature strength 3.ID 0.8-30mm 4. ... appliance, heating equipments etc. Specifications: Diameter: 0.5mm---30mm Breakdown voltage: 1.5KV, 2.5KV, 4KV,7KV Temperature range: -60 ~ 250 ... ; Colour: white, red, black, yellow, etc 1500-4000 Volt silicone rubber coated fiberglass sleeve