3M

3M 79 Glass Cloth Electrical Tape

3M™ Glass Cloth Electrical Tape 79 is an industrial grade 7 mil electrical tape constructed with a white glass cloth backing mated to a pressure sensitive acrylic adhesive. This product is used for high temperature electrical insulating, banding and strapping applications. Constructed for effectiveness in demanding high heat applications, this product provides solvent resistance, edge tear resistance and conformability for application onto uneven or irregular surfaces.

Glass cloth backing ensures maximum stability
Acrylic adhesive offers solvent resistant protection and optimized adherence
Has the ability to absorb resin and varnishes

Color: White

Backing/Carrier Material: Glass Cloth

Adhesive Type: Acrylic

TotalThickness: 7 mil

Overview
Customize
Features
Specifications
Compliance
Resources

Overview

Consult

Specify a finalized design or create a new one from scratch with our experienced converting experts.

Design

Pair our material sampling library with our precision converting capabilities to optimize and validate a prototype.

Produce

Rely on our top-tier suppliers, strict quality controls, and hands-on help to ensure your product's effectiveness throughout its lifecycle.

Customize

Customize This Material

Our wide range of converting capabilities allow us to take this material and transform it into the right width, length, shape or fabricated part to not only achieve ideal integration into your end use, but also optimize how you apply the material in your application. Our converting equipment paired with our expert engineering team will help you create the exact custom solution for your unique requirements.

To learn more about the most common converting services we offer, or to contact our team to start discussing your solution, please utilize the below links:

Tape Slitting

Die-Cutting

Custom Part Fabrication

Prototyping

Custom Length Rolls

Features

Glass cloth backing ensures maximum stability
Acrylic adhesive offers solvent resistant protection and optimized adherence
Has the ability to absorb resin and varnishes
Withstands a temperature range of 32 to 302 °F (0 to 150 °C)
Edge-tear resistant, conformable
Glass cloth backing will not shrink, rot or burn
Printable
Designed to operate in 600 volt dry applications

Specifications

Color	White
Backing/Carrier Material	Glass Cloth
Adhesive Type	Acrylic
Total Thickness	7 mil
Backing/Carrier Thickness	5 mil
Adhesive Thickness	2 mil
Adhesive Strength	30 oz/in
Tensile Strength	80 lb/in
Dielectric Breakdown	2,000 volts
Insulation Resistance	50 x 10⁶ ohms
Maximum Temperature Performance	311°F

Compliance

We value the importance of up to date an accurate regulatory information on the products we work with. For the most current Compliance and Regulatory information on your product of interest, please contact our experts for assistance.

Resources

Technical Data Sheet

3M™ Glass Cloth Electrical Tape 79 is a high-performance, printable insulating tape. Designed for use in electrical applications such as motors, transformers, and coils.

This strong electric tape is ideal for outer wrapping of bobbin-wound coils, banding of arbor-wound coils, securing lead pads, anchoring lead connections, and insulating end turns. Offers excellent mechanical strength and thermal endurance.

Rated for 600 volts, it performs reliably in temperatures ranging from 32°F to 302°F (0°C to 150°C), making it a trusted solution for demanding industrial environments.

Designed for coils/transformers and motor applications
Outer wrap for bobbin wound coils, banding arbor wound coils, lead pad hold down, end turns, lead anchors, as well as connections

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