Coating tape-aft701-3 Aluminum Foil Mastic Tape 3 in X 50 Ft

Product Description

The COATING tape-aft701-3 is a rolled aluminum foil mastic sealant tape designed for sealing and reinforcing duct joints, seams, and connections in both indoor and outdoor HVAC applications. At 3 inches wide and 50 feet long with a 30 mil thickness, this gray foil-backed tape delivers a durable, conformable bond over sheet metal, flexible duct, and rigid duct board surfaces. HVAC technicians and sheet metal contractors reach for this tape when a reliable, long-lasting air seal is required at supply and return duct connections, plenums, and duct penetrations through walls or mechanical chases.

This tape is suited for residential and light commercial HVAC ductwork where both indoor and outdoor exposure is a factor. Typical install scenarios include sealing duct joints in attic spaces, crawlspaces, rooftop unit connections, and exterior mechanical enclosures. The aluminum foil facing resists moisture, UV, and temperature cycling, making it appropriate for unconditioned spaces where plain cloth or poly tapes would break down over time. It is commonly applied by HVAC installers and sheet metal mechanics during new construction and retrofit duct sealing work.

Key Features

• 30 mil total thickness for a robust, conformable seal over irregular duct surfaces
• 3 inches wide by 50 foot roll length for efficient coverage on standard duct flanges and seams
• Aluminum foil facing resists moisture, UV exposure, and temperature extremes
• Gray finish blends with standard galvanized sheet metal ductwork
• Suitable for both indoor and outdoor HVAC duct sealing applications

Compatibility

Designed as an OEM-style replacement and general-use foil mastic tape for residential and light commercial HVAC ductwork sealing applications on sheet metal, flexible duct, and rigid duct board systems.

Installation Notes

Licensed HVAC technicians and sheet metal mechanics typically install this tape as part of duct sealing work governed by local mechanical codes and ASHRAE standards. Clean and dry all surfaces before application to ensure full adhesive contact. Do not stretch the tape during application, as this can reduce edge adhesion and lead to lifting over time. Follow all applicable local mechanical and energy codes regarding duct sealing requirements.

Technical Specifications

• Width: 3 inches
• Length: 50 feet
• Thickness: 30 mil
• Color: Gray
• Application Type: Indoor and Outdoor
• UNSPSC Code: 31201500

Standard Information

• Brand: COATING
• Manufacturer Part Number: tape-aft701-3