Design Engineering Fire Sleeve & Tape Kits are constructed from a high temperature resistant braided glass material, woven into a sleeve and heavily coated with 100% silicone rubber. Fire Sleeve provides the ultimate in heat insulation and protection from direct heat up to 500 degrees Fahrenheit. Each kit includes a 16-inch length of black Fire Tape to finish off ends of Fire Sleeve or when joining two Fire Sleeves together to present a clean and professional look.