3M 7100043931 Foil Tape White 2.83 in X 50 Yd

Product Description

The 3M 7100043931 is a white metalized polypropylene foil tape designed for sealing and facing insulation assemblies in HVAC and mechanical insulation applications. It features a tri-directionally reinforced film, scrim, and kraft (FSK) construction paired with a cold-weather acrylic pressure-sensitive adhesive. The tape delivers extremely low vapor permeability at 0.02 perms, making it well-suited for vapor retarder applications where moisture control is critical. Each roll measures 2.83 inches wide by 50 yards long. HVAC technicians and mechanical insulation contractors install this product to seal joints, seams, and laps on duct and pipe insulation systems.

This tape is used in commercial and residential mechanical insulation work, primarily for sealing FSK-faced duct wrap, duct board, and pipe insulation. It is appropriate for new construction and retrofit applications where vapor retarder integrity is required. The cold-weather acrylic adhesive maintains bond strength in low-temperature installation environments, which is common during winter mechanical work. Installers applying this tape to rigid duct board, flexible duct wrap, or pipe insulation in unconditioned spaces will find it well-matched to those conditions.

Key Features

• Tri-directional scrim reinforcement resists tearing during application and in service
• Cold-weather acrylic pressure-sensitive adhesive bonds in low-temperature conditions
• 0.02 perm rating meets vapor retarder requirements in insulation assemblies
• Meets ASTM C1136 Type II and Type IV classifications
• White metalized polypropylene facing suits exposed insulation aesthetics
• 2.83-inch width covers standard insulation seams and laps in a single pass

Compatibility

Designed as an OEM-style replacement and standard fitment tape for FSK-faced duct wrap, duct board, and pipe insulation systems requiring ASTM C1136 Type II and Type IV compliant vapor retarder facing tape.

Installation Notes

This tape is typically installed by licensed HVAC technicians or mechanical insulation contractors following SMACNA and manufacturer insulation system guidelines. Surfaces must be clean, dry, and free of dust or oil before application for full adhesive contact. Press the tape firmly across the full seam width to eliminate air pockets and ensure vapor retarder continuity. No cutting tools beyond a standard tape dispenser or utility knife are required.

Technical Specifications

• Width: 2.83 inches
• Length: 50 yards
• Adhesive Type: Cold-weather acrylic pressure-sensitive
• Facing Material: White metalized polypropylene film with scrim and kraft
• Vapor Permeability: 0.02 perms
• ASTM Classification: C1136 Type II and Type IV
• Unit of Measure: Roll
• Weight: 23.202 pounds

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100043931