Design Engineering Heat Sheath GOLD solves the problem of heat and abrasions causing failure of lines, hoses and wires. DEI Heat Sheath GOLD is manufactured from their high temperature Metalized Polyimide lamination, bonded to a robust 20 oz. heat treated glass fiber base material, the DEI line of GOLD sleeving will protect and keep components cool in the most demanding applications. Able to reflect radiant heat up to 800°F, DEI GOLD line sleeving is the perfect choice to keep critical lines, air intakes and hoses cool and protected.