Constructed with a woven fiberglass backing, 3M™ General Purpose Glass Cloth Tape 3615 features a pressure sensitive silicone adhesive for applications requiring high-temperature resistance and high adhesion. It is often used for high temperature applications requiring high tensile strength and good holding power. - Permanent sealing of high temperature ducts or chambers. Back up strip for submerged arc welding. General splicing, seaming and sealing applications. Bundling, holding and harness wrapping applications.