Thermo-Trex® high temperature silica tape is made of 96% pure SiO2 silica fiber which offers superior-resistance to radiant heat and flame. It's an ideal solution for electrical cables that are exposed to extreme heat. It is suitable for continuous use at 1800 deg F and will withstand short term exposure with temperatures as high as 2300 deg F. This wrap will not unravel or pull back from extreme heat. Adhesive backing decomposes when heated, leaving a perfectly wrapped hose, cable or assembly. Silica tape comes in 25 ft rolls and is 2 in wide.