3M 7100043828 Fsk Foil Tape 3.89 Inch X 50 Yd Acrylic

Product Description

The 3M 7100043828 is a foil/scrim/kraft (FSK) laminate tape designed for sealing and facing insulation systems in HVAC and mechanical insulation applications. It features a cold-weather acrylic pressure-sensitive adhesive backed by a split back liner for clean, controlled application. The tape is UL 723 Classified with a 5/10 flame/smoke rating and meets ASTM C1136 Type II and Type IV standards, making it suitable for jobs where code compliance is required. Tri-directional scrim reinforcement adds tensile strength and tear resistance across the tape body. Licensed HVAC technicians and mechanical insulation contractors are the primary installers of this product.

This FSK tape is used in residential and commercial HVAC duct insulation work, including sealing lap joints and butt joints on duct wrap and rigid duct board. It is also applied to facing seams on pipe and equipment insulation where a vapor-retarder facing is required. The acrylic adhesive formulation performs in cold-weather installation conditions, extending the usable range compared to standard rubber-based tape adhesives. Sold per roll.

Key Features

• UL 723 Classified with 5/10 flame and smoke rating for code-compliant installs
• Meets ASTM C1136 Type II and Type IV for FSK facing tape performance
• Tri-directional scrim reinforcement for added tensile and tear strength
• Cold-weather acrylic pressure-sensitive adhesive for reliable bond in low-temperature conditions
• Split back liner for controlled, clean peel during application
• Foil/scrim/kraft laminate construction provides vapor-retarder facing compatibility

Compatibility

Designed as an OEM-style replacement and standard seaming tape for FSK-faced duct wrap, rigid duct board, and pipe insulation systems used in residential and commercial mechanical insulation applications.

Installation Notes

Installation is typically performed by licensed HVAC technicians or mechanical insulation contractors. Surfaces must be clean, dry, and free of dust or grease before tape application to ensure proper adhesion. Apply firm hand pressure or use a seam roller to achieve full contact with the facing surface. Follow local mechanical codes and manufacturer insulation system requirements for minimum overlap and seam coverage.

Technical Specifications

• Tape Width: 3.89 inches
• Tape Length: 50 yards per roll
• Adhesive Type: Cold-weather acrylic pressure-sensitive
• Construction: Foil/scrim/kraft (FSK) laminate
• Liner: Split back
• Color: Silver
• Flame/Smoke Rating: 5/10 (UL 723 Classified)
• Standards: ASTM C1136 Type II and Type IV
• Package Weight: 30 pounds
• Package Dimensions: 12.88 inches x 12.88 inches x 12.75 inches
• Unit of Measure: Roll
• Minimum Order Quantity: 12
• UPC: 051128960061

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100043828