3M 7100034270 Glass Cloth Tape 8.3 Mil 0.75in X 60yd White

Product Description

The 3M 7100034270 is a thermosetable glass cloth tape engineered for demanding bonding and splicing applications where high adhesion and a conformable backing are required. The tape features an 8.3 mil white glass cloth backing paired with a thermosetable rubber-resin adhesive that flows into irregular surfaces to create a strong, lasting bond. The glass cloth backing delivers high tensile strength and temperature resistance, making this tape suitable for applications that standard film or foil tapes cannot handle. HVAC, insulation, and industrial maintenance technicians commonly specify this tape where durability and surface conformability are critical.

This tape is used in a wide range of applications that demand high holding power over rough or low-strength surfaces. Common uses include splicing roofing felt, textiles, and similar materials with uneven or porous surfaces. The thermosetable adhesive cures to form a firm, high-strength bond, which makes this tape appropriate for both fabrication environments and field repair work. Its white finish and consistent 8.3 mil thickness provide a uniform appearance across spliced seams.

Key Features

• 8.3 mil thermosetable glass cloth backing for high tensile strength and temperature resistance
• Thermosetable rubber-resin adhesive flows into rough or irregular surfaces for strong adhesion
• Conformable backing adapts to uneven substrates including roofing felt and textiles
• White finish provides a clean, consistent appearance on finished splices
• Roll format — 0.75 inches wide by 60 yards long for extended coverage per roll

Compatibility

Designed for splicing and bonding applications involving materials with rough surfaces or low internal strength, including roofing felt, textiles, and similar industrial substrates where high adhesion and a conformable backing are required.

Installation Notes

This tape is typically applied by insulation contractors, HVAC technicians, and industrial maintenance personnel. Surfaces should be clean, dry, and free of dust or oil before application to ensure maximum adhesive contact. Apply firm, even pressure across the tape width to promote full adhesive flow into the substrate. Consult applicable building or mechanical codes for any code-governed splicing or sealing applications.

Technical Specifications

• Tape Thickness: 8.3 mil (0.20 mm)
• Width: 0.75 inches
• Length: 60 yards
• Backing Material: Glass cloth
• Adhesive Type: Thermosetable rubber-resin
• Color: White
• Unit of Measure: Roll
• Weight: 0.63 pounds

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100034270