3M 322F2 Aluminum Foil Tape 1.89 in X 150 Ft 3.7 Mil Hvac

Product Description

The 3M 322F2 is a dead-soft aluminum foil tape with a cold-weather acrylic pressure-sensitive adhesive, engineered for sealing, patching, and joining foil-faced insulation and duct systems. Supplied in rolls measuring 1.89 inches wide by 150 feet long with a nominal 3.7 mil total thickness, it maintains adhesion across a service temperature range of -40 degrees F to 250 degrees F. The dead-soft foil backing conforms readily to irregular surfaces and contours, while the acrylic adhesive chemistry provides reliable bond strength even in cold-weather installation conditions. HVAC technicians and insulation contractors rely on this tape for duct fabrication, insulation facing repairs, and air-seal work.

This tape is suited for residential and commercial HVAC applications where foil-faced duct board, flexible duct, and insulation systems require a durable, temperature-resistant seal. It is commonly used during new duct installation, duct repair, and insulation patching tasks. Confirm published UL listings, adhesion values, and approved substrate compatibility per official 3M technical documentation before application on any regulated or code-inspected system.

Key Features

• Dead-soft aluminum foil backing conforms to irregular and curved surfaces
• Cold-weather acrylic pressure-sensitive adhesive bonds reliably at low temperatures
• Service temperature range of -40 degrees F to 250 degrees F
• Nominal 3.7 mil thickness for durable, tear-resistant performance
• Roll size of 1.89 inches x 150 feet provides substantial coverage per roll
• Designed for sealing, patching, and joining foil-faced insulation and duct assemblies

Compatibility

Designed for use with foil-faced duct board, flexible duct systems, and foil-faced insulation materials. Verify approved substrate compatibility and applicable UL listing requirements per official 3M technical documentation prior to installation.

Installation Notes

Installation is typically performed by licensed HVAC technicians or insulation contractors. Power down and de-energize associated HVAC equipment before accessing duct systems for repair or sealing work. Ensure substrate surfaces are clean, dry, and free of dust, oil, and loose material before applying tape to achieve proper adhesion. Reference local mechanical codes and applicable standards for duct sealing requirements in your jurisdiction.

Technical Specifications

• Backing Material: Dead-soft aluminum foil
• Adhesive Type: Cold-weather acrylic pressure-sensitive
• Color: Silver
• Width: 1.89 inches (48 mm)
• Length: 150 feet (45.7 m)
• Total Thickness: 3.7 mil
• Service Temperature Range: -40 degrees F to 250 degrees F

Standard Information

• Brand: 3M
• Manufacturer Part Number: 322F2