BT-50A features an aggressive adhesive that provides a quick stick to many surfaces, including insulation. The foil conforms to irregular surfaces, and maximizes adhesion. Ideal for general purpose applications like holding, patching, sealing and masking. Features: 2 mil dead soft high tensile aluminum foil coated with an aggressive solvent based acrylic adhesive 1.8 in (48mm) wide, 50 Yards long removable paper liner Malleable foil conforms well to irregular and curved surfaces Performs well at both low and elevated temperatures. Can be applied at low temps Used for vapor barrier protection, waterproof sealing, heat reflection & dissipation, masking in paint stripping and electroplating. Total Tape Thickness (w/o liner): 3.6 mil. Peel Adhesion: 73 oz/in. Tensile: 17.1 lbs/in. Elongation: 3.5%. Operating Temperature Range: -22°F to 248°F. 3” neutral core diameter.