3M 7100039678 Aluminum Foil Tape 0.47 in X 55 M Silver Acrylic

Product Description

The 3M 7100039678 is a dead-soft aluminum foil tape with a pressure-sensitive acrylic adhesive backing, designed for heat shielding, seaming, sealing, and light-reflecting applications across HVAC, refrigeration, and industrial environments. The roll measures 0.47 inches wide and 55 meters long, giving installers a generous run length per roll. The acrylic adhesive bonds firmly for long-term durability while still releasing cleanly after temporary masking use. The aluminum foil construction is thermally conductive, helping dissipate heat and improve thermal efficiency in heating and cooling systems. Licensed HVAC technicians, sheet metal workers, and insulation contractors are the primary installers.

This tape is suited for residential and commercial HVAC ductwork seaming and sealing, heat shielding around sensitive components, and light-reflective applications in mechanical and industrial settings. The dead-soft foil backing conforms readily to curved, irregular, and uneven surfaces, making it practical for field wrapping of duct transitions, plenums, and insulated pipe sections. It also performs in outdoor and exposed applications where moisture, UV exposure, and weathering are concerns.

Key Features

• Dead-soft aluminum foil backing conforms to curved and uneven surfaces without cracking
• Pressure-sensitive acrylic adhesive offers long-term durability and clean removal after masking
• Thermally conductive construction helps dissipate heat and supports heating and cooling efficiency
• Resistant to flame, moisture, UV, and general weathering
• Heat and light reflective surface protects adjacent materials and enhances lighting efficiency
• Classified by UL to UL 723, Class L low flammability rating

Compatibility

Designed for use in HVAC ductwork seaming and sealing, heat shielding, insulation facing, and general sheet metal applications in residential and commercial mechanical systems.

Installation Notes

This tape is typically applied by HVAC technicians, sheet metal workers, and insulation installers. Surfaces should be clean, dry, and free of dust or oil before application to ensure full adhesive contact. Apply firm pressure across the full tape width after laying to activate the pressure-sensitive adhesive. When used on ductwork, follow local mechanical codes and manufacturer guidelines for acceptable sealing methods.