3M 7000049898 Cryogenic Vapor Barrier Foil Tape 2.83 in

Product Description

The 3M 7000049898 is a multi-layered, conformable foil tape engineered for cryogenic and low-temperature vapor barrier applications. It features an aluminum foil core laminated between two layers of 0.5 mil polyester film, creating a zero-permeable barrier that seals joints and seams against vapor infiltration. A cold-weather pressure-sensitive acrylic adhesive bonds reliably at temperatures well below freezing, making this tape suitable for refrigeration piping, chilled water systems, and cryogenic insulation work where standard tapes fail. HVAC and mechanical insulation contractors are the primary installers.

This tape is designed for vapor barrier joint closure on insulated piping, duct systems, and equipment operating at low or cryogenic temperatures. Its flexible backing conforms to irregular, curved, and contoured surfaces, allowing clean application over fittings, elbows, and transitions. The polyester film on both sides of the aluminum foil laminate resists pinhole formation, maintaining the integrity of the vapor barrier over time in demanding environments. Typical installations include commercial refrigeration, industrial process piping insulation, and mechanical room chilled-water systems.

Key Features

• Zero-permeable laminate construction provides a continuous vapor barrier at seals and seams
• Polyester film on both sides of the aluminum foil laminate resists pinhole formation
• Cold-weather acrylic adhesive bonds effectively at sub-freezing temperatures
• High puncture and tear resistance for durability in demanding service conditions
• Flexible, conformable backing adheres to curved and irregular surfaces
• All-weather construction suitable for indoor and outdoor mechanical insulation work

Compatibility

Designed as an OEM-style vapor barrier closure tape for use on insulated refrigeration piping, cryogenic systems, and low-temperature mechanical insulation assemblies where a zero-permeable seal is required.

Installation Notes

Installation is typically performed by licensed mechanical or refrigeration contractors. Surfaces should be clean, dry, and free of oils or frost before application. Apply firm, even pressure across the full tape width to ensure full adhesive contact, particularly on curved surfaces. Follow applicable mechanical codes and insulation manufacturer guidelines for overlap and coverage at joints and seams.

Technical Specifications

• Width: 2.83 inches
• Length: 50 yards
• Backing Material: Aluminum foil with dual 0.5 mil polyester film layers
• Adhesive Type: Cold-weather pressure-sensitive acrylic
• Color: Silver
• Unit of Measure: Roll
• Package Weight: 29.602 pounds
• Package Length: 12.38 inches
• Package Width: 12.38 inches
• Package Height: 12.75 inches
• UPC: 051128957313

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000049898