... for heat shield,flange and valve covers, welding curtains,etc Glass Fiber Fabric with Heat Treatment, Thicker, Heavier and Stronger, Provides ... durability, when subjected to heat shock treatments, Soft and flexible, making it ideal for wrapping around uneven surfaces and equipments ... sparks area. The base fiberglass is high performance C/E-glass fiberglass cloth. From thickness 0.01 till 3mm, with ...