3M 7100043825 Fsk Foil Tape 2.83 in X 50 Yd Acrylic Hvac

Product Description

The 3M 7100043825 is a foil/scrim/kraft (FSK) laminate tape designed for sealing and facing insulation in HVAC duct systems, mechanical insulation, and vapor retarder applications. It features a cold-weather acrylic pressure-sensitive adhesive backed by a split-back release liner, making it practical for installations in low-temperature environments. The tape carries a UL 723 classification with a 5/10 flame/smoke rating, and meets ASTM C1136 Type II and IV standards. Tri-directional scrim reinforcement adds tear resistance and dimensional stability under stress. The roll measures 2.83 inches wide by 50 yards long.

This tape is used primarily in commercial and residential HVAC installations where code-compliant insulation facing and vapor barrier sealing are required. It is a standard choice for sealing FSK-faced duct wrap, duct board, and mechanical pipe insulation. HVAC technicians and insulation contractors rely on it when working on air handling systems, plenums, and ductwork assemblies that require a rated flame and smoke barrier at joints and seams.

Key Features

• UL 723 Classified with 5/10 flame/smoke rating for code-compliant installs
• Meets ASTM C1136 Type II and Type IV for flexible vapor retarder facings
• Tri-directional scrim reinforcement resists tearing and puncture
• Cold-weather acrylic pressure-sensitive adhesive bonds in low-temperature conditions
• Split-back liner allows controlled, one-handed application
• 2.83-inch width spans standard insulation seams in a single pass

Compatibility

Designed for use with FSK-faced duct wrap, duct board, and flexible fiberglass pipe insulation in residential and commercial HVAC and mechanical systems requiring UL 723 rated facing tape.

Installation Notes

Installation is typically performed by licensed HVAC technicians or insulation contractors in accordance with SMACNA and local mechanical codes. Surface should be clean, dry, and free of dust or oil before application for full adhesive contact. Power down air handling equipment before accessing ductwork for taping. Avoid stretching the tape during application to maintain dimensional stability and a consistent seal at seams and joints.

Technical Specifications

• Width: 2.83 inches
• Length: 50 yards
• Adhesive Type: Cold-weather acrylic pressure-sensitive
• Construction: Foil/scrim/kraft (FSK) laminate with split-back liner
• Flame/Smoke Rating: 5/10 (UL 723 Classified)
• ASTM Standard: C1136 Type II and Type IV
• Reinforcement: Tri-directional scrim
• Color: Silver
• Package Weight: 29.65 pounds
• Unit of Measure: Roll
• UPC: 051128960054

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100043825