3M 7100043912 Fsk Foil Tape 6 Inch X 50 Yd Silver

Product Description

The 3M 7100043912 is a foil/scrim/kraft (FSK) laminated facing tape engineered for sealing and joining FSK-faced insulation board and duct assemblies. Coated with a pressure-sensitive cold-weather solvent acrylic adhesive, it delivers quick tack at normal temperatures and maintains reliable adhesion in low-temperature job site conditions. The FSK laminate backing combines aluminum foil, reinforcing scrim, and kraft paper to produce a tape with high puncture resistance and tear resistance. At 6 inches wide and 50 yards long, each roll covers substantial run length on a single duct section. HVAC installers and insulation mechanics reach for this tape when sealing ductboard seams and fibrous blanket joints that require a vapor-retarding, durable face bond.

The 7100043912 is suited to residential and light commercial HVAC duct systems where FSK-faced rigid ductboard or flexible duct insulation is used. It conforms to curved, corrugated, and irregular duct surfaces without bridging or lifting, making it practical for field sealing where surface geometry varies. The flexible backing makes installation straightforward without specialized applicators or primers on standard FSK substrates. It performs in cold job site environments, including unconditioned attics, crawl spaces, and mechanical rooms during winter installation.

Key Features

• FSK laminate backing — aluminum foil face, reinforcing scrim, and kraft paper layer — for use on fibrous ductboard and sheet metal ducts
• Cold-weather acrylic adhesive maintains tack and bond strength in low-temperature conditions
• High puncture and tear resistance for long-term durability in demanding install environments
• Flexible construction conforms to curved, irregular, and fibrous duct surfaces
• 6-inch width and 50-yard length reduce seam count and roll changes on long duct runs
• No special tools or application methods required for field installation

Compatibility

Designed for use with FSK-faced insulation board and duct assemblies. Matches standard FSK facing found on rigid ductboard and fibrous insulation blankets common in residential and light commercial HVAC duct systems.

Installation Notes

Installation is typically performed by HVAC technicians or insulation mechanics. Before applying, ensure the FSK substrate surface is clean, dry, and free of dust or oil to achieve full adhesive contact. Press tape firmly across the full width of the seam to eliminate air pockets. Follow local mechanical codes and the duct manufacturer's application guidelines for seam treatment on pressurized duct systems.

Technical Specifications

• Tape Width: 6 inches
• Tape Length: 50 yards
• Backing Type: Foil/Scrim/Kraft (FSK) laminate
• Adhesive Type: Pressure-sensitive cold-weather solvent acrylic
• Color: Silver
• Unit of Measure: Roll
• Package Weight: 28.002 pounds
• Package Length: 12.38 inches
• Package Width: 12.38 inches
• Package Height: 12.75 inches
• Minimum Order Quantity: 8
• UPC: 051128955876

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100043912