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The 3M 7100043713 is an aluminum foil tape designed for sealing, patching, and joining HVAC ductwork and related insulation systems. Built on a nominal 1.8 mil aluminum foil carrier, it uses a pressure-sensitive cold weather acrylic adhesive that maintains reliable bond strength down to -10 degrees F. The tape measures 2.83 inches wide and runs 50 yards per roll. Its flexible foil construction allows it to conform to curved, irregular, or fibrous surfaces without cracking or lifting. HVAC technicians and sheet metal workers reach for this tape for duct sealing, heat shielding, and light-reflecting applications where consistent adhesion across varying temperatures is required.
This tape is suited for both residential and light commercial HVAC installations. It adheres to fibrous ductboard, rigid fiberglass insulation, and sheet metal duct surfaces. Typical applications include sealing longitudinal and circumferential duct joints, patching foil-faced insulation, and general-purpose heat shielding on supply and return air systems. The tape is hand tearable and does not require a dispenser or cutting tool, making it practical for field use where speed and convenience matter.
Designed for use on fibrous ductboard and sheet metal ducts in residential and commercial HVAC systems where a pressure-sensitive aluminum foil tape is specified.
Installation is typically performed by licensed HVAC technicians or sheet metal workers. Power down the air handling system before working on ductwork to prevent pressure differentials that can lift tape during application. Clean and dry all mating surfaces before applying the tape to ensure full adhesive contact. Local mechanical codes, including SMACNA standards, may specify approved taping methods and materials for duct sealing applications.
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