Vermiculite coated fiberglass is made from highly texturized amorphous silica yarn and has a proprietary temperature treatment. Typical applications include high temperature expansion joints, safety curtains, fire blankets and drop cloths for medium to heavy duty industrial applications, flue ducts, turbine insulations & gasketing. Typical industries include fossil and nuclear power plants, refineries & petrochemical plants, steel, aluminum, copper and other metal industries. Resists most acids, alkalis & solvents.