TREMstop® FS Blanket is a strong, lightweight, needled blanket of bio-soluble fibers developed from a calcia, magnesia, silica chemistry to provide thermal insulation at operating temperatures up to 1832° F (1000° C). It is an inorganic product that exhibits no smoke generation or outgassing in service.

Is used as a packing material around metal pipe penetrations, cables and cable trays and in joints.