3M Aluminum Foil Tape, 425, silver, 4.0 in x 60.0 yd x 4.6 mils (10.2 cm x 54.9 m x 0.12 mm) 3M Aluminum Foil Tape 425 is the go-to foil tape for numerous applications across a broad range of industriesComprised of a dead soft, aluminum foil backing and coated with a highly engineered pressure sensitive acrylic adhesive, it is ideal for heat shielding, heat reflecting, chemical masking, light enhancement, chemical milling, seaming, sealing, and de-paint operations. Product Information Brand 3M Part # 7100053631 Adhesive Type Acrylic Color Silver Elongation 6 Percent Length 60yds Width 4 Inch Origin Country USA Product Type Foil Tapes Thickness 4.6 mil Product InformationDead soft aluminum foil backing conforms to curved and uneven surfacesHeat-resistant and light-reflective tape protects surfaces and enhances lighting efficiencyHighly engineered acrylic adhesive provides long term durability, but removes cleanly after harsh masking applicationsIts chemical resistant nature ensures surfaces are protected during de-paint process and other chemical masking operationsThermally conductive tape helps dissipate heat and improves heating and cooling efficiency to protect temperature sensitive materialsWithstands exposure to weathering, moisture, and UV RaysSuggested ApplicationIdeal as a maskant in electroplating aluminum as it will not contaminate the bathPerforms well when used as a sealant due to very low moisture vapour transmission rateGreat for general purpose holding, patching, and sealing applications, both indoors and out