Attributes . Silica Cloth is of Use Where the Material Needs to be Flexible and is Exposed to High Heat Applications Such as in Heat Treating. Uncoated Fiberglass Has Similar Features With a Melt Temperature of 1000 Degrees F. Silica Cloth is Subject to Abrasion, will Fray When Cut, is Slippery When Used Under Foot, and will Absorb Fluids and Solvents. This material is an uncoated Plain Weave Fiberglass Cloth. . Names