Insulation sealing tape Size: 2in, 20M, high-strength foil-scrim-kraft paper laminate backing resists tearing. Fiber-Glass Composites cloth Foil Tape is waterproof, heat and high temperature resistant, rust proof, electronic jamming, for repairing, perfect shielding and anti-interference, with many applications. Perfect for sealing air ducts, designed to easily for Pipe Sealing, HVAC, Metal Repair, Patching Hot Cold Air Ducts, Heat Insulation. Self-Adhesive Heat Reflective Tape is waterproof, heat and high temperature resistant, rust proof, electronic jamming, for Pipe Sealing, HVAC, Metal Repair, Patching Hot Cold Air Ducts, Heat Insulation Wrap Exhaust Shield Thermal Barrier tape and so on. This tape roll provides a durable bond at low and high temperatures. Conformable backing and pressure sensitive adhesive means it will adhere properly to a variety of smooth and irregular surfaces.