22-30/22-31 Eco-Fab Hi-temp Adhesive is a sodium silicate based adhesive for adhering calcium, silicate insulation and other high temperature insulations to themselves or to non-porous substrates. 22-30/22-31 Eco-Fab Hi-temp Adhesive dries to a hard brittle film. It may be used for lagging asbestos cloth on very high temperature installations.