Fiberglass Cloth Header/Exhaust Wrap, Black, 1" X 50Ft., This Fiberglass Tape Insulates Exhaust Pipes And Maintains Higher Temperature Inside The Pipes, Allowing For Complete Fuel Burn And Better Performance. Our Exhaust Wraps Have Maximum Operating Temperature Ratings Of 1200 Deg. F. To Extend The Life Of Exhaust Wrap And To Help Seal It From The Elements Use Helix Very-High Temperature Exhaust System Paint Available In Three Colors.