whats that guaze wrap called you use on your headers?

[hc99si1]

I need to get hold of a roll of this guaze, does anyone know what its called or an alternative material i can wrap around the header?

thx guys

[05 tC]

Several companys make the heat wrap you are talking about. Wraping the header keeps the exhaust gasses from cooling down and helps gas keep velocity up. It will also keep under-hood temps. down. However, over time, especially if you live along the coast or where it rains alot - dirt, salt, sand, mud, water, all these things can seep into the wrap and cause rusting on the headers because of moisture trapped between the wrap and the pipe.

http://www.thermotec.com/tt/

[hc99si1]

thanks

ive heard people say that wrapping the headers will make them more likely to crack because of the heat?