Heat resistant stability: It can be used in -60 degree  to 260 degree for a long time. As per the PTFE Coated Fiberglass Cloth Tape, It can be working two hundred days in 260 degree during the strengthen test. Neither intensity nor weight would be reduce in the test. In the other hand, the fabric remain soft in rather low temperature instead of chap, even in -180 degree. It continues working for 120 hours in 350 degree high temperature quite well.