3M 365 3 Foil Adhesive Tape 3 in X 60 Yards

Product Description

The 3M 365 3 is a foil adhesive tape designed for sealing, joining, and patching applications in HVAC, sheet metal, and related mechanical systems. Constructed with a metallic foil backing and a pressure-sensitive adhesive, it delivers a durable, airtight bond on duct surfaces and similar substrates. Each roll measures 3 inches wide by 60 yards in length, providing substantial coverage per roll. HVAC technicians and sheet metal workers reach for this tape when a reliable, conformable foil seal is required on metal ductwork, insulation facings, and other smooth or semi-smooth surfaces.

This tape is suited for residential and light commercial HVAC installations where foil tape is the specified sealing material. Common applications include sealing duct board seams, wrapping flexible duct connections, patching foil-faced insulation, and securing vapor barriers. Its foil construction makes it appropriate for use in areas where a heat-reflective or moisture-resistant surface is beneficial. It is typically installed by licensed HVAC technicians or sheet metal contractors working on forced-air distribution systems.

Key Features

• Foil backing with pressure-sensitive adhesive for airtight seams on duct and insulation surfaces
• 3-inch width provides broad coverage per pass, reducing the number of overlapping strips needed
• 60-yard roll length offers high yield per roll, reducing change-outs on larger jobs
• Conformable foil construction adapts to irregular or curved surfaces common in ductwork installations
• Suitable for use on duct board, foil-faced insulation, and sheet metal substrates

Compatibility

Designed as an OEM-style foil adhesive tape suitable for sealing and patching applications on residential and commercial HVAC ductwork, foil-faced insulation, and sheet metal assemblies.

Installation Notes

Foil adhesive tape is typically applied by HVAC technicians or sheet metal contractors. Before applying, ensure the substrate surface is clean, dry, and free of dust, oil, or loose debris to achieve maximum adhesive bond. Power down the air handling system before working inside or on ductwork to prevent air pressure from displacing the tape during application. Press firmly along the full length of the tape after placement to ensure full contact between the adhesive and the substrate.

Technical Specifications

• Width: 3 inches
• Length: 60 yards
• Backing Material: Foil
• Adhesive Type: Pressure-sensitive

Standard Information

• Brand: 3M
• Manufacturer Part Number: 365 3