3M 7100043781 Aluminum Foil Tape 1.88 in X 50 Yd Silver

Product Description

The 3M 7100043781 is a dead-soft aluminum foil tape with a cold-weather pressure-sensitive acrylic adhesive, designed for vapor sealing on ductwork and exterior insulation materials. The aluminum backing is high-strength yet flexible, conforming readily to curved and irregular surfaces including fibrous duct board and sheet metal. The cold-weather acrylic adhesive maintains bond strength at temperatures well below freezing, making this tape a reliable choice when standard acrylic adhesives lose tack. HVAC technicians and insulation installers use this tape where moisture vapor control and durable adhesion are both critical.

This tape is suited for residential and commercial HVAC applications involving supply and return air ductwork, exterior duct insulation jacketing, and vapor barrier sealing. It is hand-tearable and installs without special tools or application equipment, which makes it practical for field use on new construction and retrofit jobs alike. Its high puncture and tear resistance supports long service life in environments with temperature swings and elevated humidity.

Key Features

• Dead-soft aluminum foil backing conforms to curved and irregular duct surfaces
• Cold-weather acrylic adhesive bonds at temperatures well below freezing
• High puncture and tear resistance for long-term durability in demanding environments
• Suitable for vapor sealing on fibrous duct board and sheet metal ducts
• Hand-tearable for fast field installation without special tools
• Designed for use on exterior insulation materials requiring moisture vapor control

Compatibility

Designed for use on fibrous ductwork, sheet metal ducts, and exterior insulation materials where vapor sealing and cold-weather adhesion are required.

Installation Notes

Installation is typically performed by HVAC technicians or insulation contractors. Shut down the air handling system before applying tape to ductwork to prevent dust and debris from contaminating the adhesive surface. Clean and dry all surfaces prior to application for best adhesion. Follow applicable mechanical codes and insulation manufacturer guidelines for vapor barrier continuity and overlap requirements.

Technical Specifications

• Tape Width: 1.88 inches
• Tape Length: 50 yards per roll
• Color: Silver
• Backing Material: Aluminum foil
• Adhesive Type: Cold-weather pressure-sensitive acrylic
• Unit of Measure: Roll
• Minimum Order Quantity: 24 rolls
• Package Weight: 24.677 pounds
• Package Length: 11.13 inches
• Package Width: 11.13 inches
• Package Height: 12.25 inches
• UPC: 051128955616

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100043781