500°F/260°C Continuous Exposure: Higher Intermittent BSTFLEX FIRE SLEEVE BSTFLEX FIRE SLEEVE is disgned to protect hoses,wires and cables from the hazards of high heat and occasional flame. BSTFLEX FIRE SLEEVE protects continuously to 260°C/500°F and will withstand a molten splash at 1200°C/2200°F.Made of knitted fiberglass yarns in a flexible substrate,it is then coated with a high grade silicone rubber. Resistant to hydraulic fluids,Iubricating oils,and fuels,Slicone Sleeve insulates against energy loss in piping and hosing;protects employees from burns;and allows bunding of wires,hoses,and cables. BSTFLEX FIRE SLEEVE is the perfect cover to protect hydraulic hoses,pneumatic lines and wiring bundles. BSTFLEX FIRE SLEEVE can withstand repeated exposures to molten steel, molten aluminum and molten glass up to 3000°F (1650°C).