... : 10~12KV 4. Packing: according to u high quality Sleeve Heat Sleeve is made of High bulk of the glass fiber tube ... . function:Resistant to Hydraulic Fluids, Lubricating Oils and fuels, Silicone Sleeve insulates against energy loss in piping and hosing; protects employees ... burns and allows “burning” of wires, hoses, and cables. Heat Sleeve are primarily used as the thermal protection of circular items ...