3M 7100043850 Fsk Foil Tape 2.5 in 50 Yd Cold Weather

Product Description

The 3M 7100043850 is a foil/scrim/kraft (FSK) laminated tape designed to match FSK-faced insulation board and duct assemblies. It features a pressure-sensitive, cold-weather solvent acrylic adhesive that provides quick tack at normal temperatures while maintaining reliable bond strength in low-temperature conditions. The tape measures 2.5 inches wide and comes in a 50-yard roll. Its flexible laminate backing conforms to curved, fibrous, and irregular surfaces, making it a practical choice for ductboard, duct blankets, and sheet metal duct applications. HVAC installers and insulation contractors use this tape as a primary seaming and facing tape in both new construction and retrofit work.

This tape is suited for residential and commercial HVAC applications where FSK-faced ductboard or blanket insulation is used. It performs in cold-weather job site conditions where standard tapes may lose tack or fail to bond properly. Typical install scenarios include sealing joints and seams on fibrous ductboard systems, wrapping duct blankets, and adhering FSK facing on insulated assemblies. The pressure-sensitive adhesive eliminates the need for heat guns or primers under normal application conditions.

Key Features

• FSK laminate backing combines foil, scrim, and kraft layers for durability on fibrous and sheet metal ducts
• Cold-weather acrylic adhesive maintains bond in low-temperature job site conditions
• High puncture and tear resistance for long service life in demanding environments
• Flexible backing conforms to curved and irregular duct surfaces
• Pressure-sensitive adhesive installs without special tools or primers
• 2.5-inch width suits standard FSK duct and insulation board seam dimensions

Compatibility

Designed for use with FSK-faced insulation board and duct assemblies as an OEM-style FSK facing and seaming tape.

Installation Notes

Licensed HVAC technicians and insulation contractors typically install this tape in accordance with local mechanical codes and manufacturer duct system specifications. Clean all mating surfaces of dust, moisture, and oils before application to ensure full adhesive contact. Apply firm hand pressure across the full tape width when seaming to activate the pressure-sensitive adhesive. No heat activation or special applicator tools are required under standard conditions.

Technical Specifications

• Tape Width: 2.5 inches
• Tape Length: 50 yards
• Adhesive Type: Pressure-sensitive cold-weather solvent acrylic
• Backing Material: Foil/scrim/kraft (FSK) laminate
• Unit of Measure: Roll
• Minimum Order Quantity: 12 rolls
• Package Weight: 27.2 pounds
• Package Length: 12.38 inches
• Package Width: 12.38 inches
• Package Height: 12.44 inches
• UPC: 750351500159

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100043850