Heat Sheath GOLD(TM) solves the problem of heat and abrasions causing failure of lines, hoses & wires. DEI Heat Sheath GOLD is manufactured from our high temperature metalized polyimide lamination, bonded to a robust 20oz. heat treated glass fiber base material, the DEI line of GOLD(TM) sleeving will protect and keep components cool in the most demanding applications. Able to reflect radiant heat up to 800F makes DEI GOLD line sleeving the perfect choice to keep critical lines, air intakes and hoses cool and protected. 20oz. heat treated base glass Metalized Polyimide lamination Base glass rated to 1100F DO NOT apply directly to exhaust components.