Original FM Racing exhaust wrap(tape) is made from specially processed silica, which is wired with Kevlar yarn for extra wibroinsulation. This makes it strong and flexible while operating at its designed service temp 1300 celsius. You can actually wrap the header with this wrap, run it, heat it up, and literally unwrap the Wrap when needed.There is no other exhaust insulating wrap on the market that will take higher temperatures and last longer. Approved on many rallycros and rally cars.