3M 7000048540 Glass Cloth Tape 8.3 Mil 3in X 60yd White

Product Description

The 3M 7000048540 is a white, thermosetable glass cloth tape designed for high-adhesion bonding applications where surface irregularities and low substrate strength are factors. The tape measures 3 inches wide by 60 yards long and carries an 8.3 mil total thickness. It is built around a fiberglass cloth backing with a thermosetable rubber-resin adhesive that flows into rough surfaces and cures to a firm, high-strength bond. The combination of high tensile strength, temperature resistance, and strong holding power makes this tape a dependable choice for splicing, sealing, and reinforcing work performed by HVAC technicians, insulation contractors, and industrial maintenance crews.

This tape is suited for applications requiring a conformable, high-strength backing that can handle rough or low-internal-strength substrates. Common uses include splicing roofing felt, bonding textiles, and sealing insulation assemblies in both residential and commercial settings. The thermosetable adhesive system is particularly well matched to surfaces that standard pressure-sensitive tapes cannot grip reliably. It is appropriate for applications where elevated temperatures or mechanical stress may compromise conventional tape products.

Key Features

• 8.3 mil total thickness for substantial backing strength without excessive bulk
• Thermosetable rubber-resin adhesive flows into rough surfaces for high holding power
• High-tensile fiberglass cloth backing resists tearing and mechanical stress
• Temperature-resistant construction suitable for HVAC and industrial environments
• Conformable backing adapts to irregular substrate profiles
• White finish for clean appearance on visible installations

Compatibility

Designed for splicing and bonding applications involving roofing felt, textiles, insulation facings, and other materials with rough surfaces or low internal strength. Suitable for use wherever a conformable, thermosetable glass cloth tape is specified.

Installation Notes

Surface preparation is critical — substrate should be clean, dry, and free of oils or loose debris before application. Apply firm pressure across the full tape width to ensure full adhesive contact with rough or irregular surfaces. This product is intended for professional installation by qualified tradespeople following applicable project specifications and safety guidelines. Consult the material safety data sheet before handling in enclosed or poorly ventilated spaces.

Technical Specifications

• Tape Width: 3 inches
• Tape Length: 60 yards
• Total Thickness: 8.3 mil (0.20 mm)
• Backing Material: Fiberglass cloth
• Adhesive Type: Thermosetable rubber-resin
• Color: White
• Unit of Measure: Roll
• Weight: 2.5 pounds
• Minimum Order Quantity: 12
• UPC: 00021200030215

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000048540