Size for silica sleeves range from 3/8" ID to 1 1/2" ID. Provides insulation and protection up to 1800F (982C). Efficient, low maintenance thermal insulation, fireproof and resistant to oxidation and most corrosive solutions. Protection from potential damage caused by molten metal splash,sparks, and radiant heat. Size for fiberglass sleeve is 3/8" ID to 3 1/2" ID. Fiberglass sleeve has continuous protection to 1000F (536C), 100% woven textturized fiberglass, abrasion resistant, resistant to chemicals. and low irritation factor. Fiberglass sleeving is used for insulation of metal tubing, protection of hose lines and cables, and gasketing.