3M 7100043750 Aluminum Foil Tape 2.83 in X 50 Yd Hvac

Product Description

The 3M 7100043750 is a 2.0 mil dead-soft aluminum foil tape with a pressure-sensitive acrylic adhesive, designed for sealing and patching fibrous and sheet metal ductwork in HVAC systems. The acrylic adhesive is rated for continuous service from -40 degrees F to 250 degrees F, making it reliable across a wide range of operating environments, including high-heat and high-humidity conditions. The malleable foil backing conforms to curved, irregular, and non-planar surfaces without buckling or lifting. HVAC technicians and sheet metal installers apply this tape by hand — no special tools or application equipment required. The easy-release kraft liner speeds up installation in the field.

This tape is suited for residential and light commercial HVAC ductwork applications, including sealing joints and seams on fibrous glass duct board and sheet metal duct systems. It is well matched to environments where temperature swings, condensation, or elevated humidity would compromise lesser adhesive systems. The hand-tearable design makes it practical for in-place duct repairs and new duct fabrication work where roll-cutting tools are not available on site.

Key Features

• 2.0 mil dead-soft aluminum foil backing conforms to irregular and curved duct surfaces
• Pressure-sensitive acrylic adhesive rated from -40 degrees F to 250 degrees F
• Performs in high-heat and high-humidity HVAC environments
• Hand tearable — no cutting tools required for field installation
• Easy-release kraft liner for fast, clean application
• Suitable for both fibrous duct board and sheet metal duct surfaces

Compatibility

Designed as an OEM-style foil sealing tape for residential and light commercial HVAC duct systems, including fibrous glass duct board and sheet metal ductwork applications.

Installation Notes

Installation is typically performed by licensed HVAC technicians or sheet metal mechanics. Before applying, ensure the duct surface is clean, dry, and free of dust, oil, or loose debris for maximum adhesive contact. Power down the air handling system before working inside or adjacent to air ducts. Apply firm, even hand pressure across the full tape width to seat the adhesive and eliminate air pockets along seams and joints.

Technical Specifications

• Tape Thickness: 2.0 mil
• Width: 2.83 inches
• Length: 50 yards per roll
• Adhesive Type: Pressure-sensitive acrylic
• Temperature Range: -40 degrees F to 250 degrees F
• Backing Material: Dead-soft aluminum foil
• Liner: Easy-release kraft liner
• Unit of Measure: Roll
• Package Dimensions: 11.13 x 11.13 x 12.25 inches
• Weight: 29.477 pounds
• UPC: 051115783116

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100043750