3M 7000031629 Varnished Cotton Cloth Electrical Tape

Product Description

The 3M 7000031629 is a varnished cotton cloth electrical tape designed for insulating applications in electrical systems. Unlike pressure-sensitive tapes, this tape uses no adhesive — it relies on its varnished cloth construction to conform to and insulate conductors, coils, and connections. The cotton cloth base provides flexibility and absorbs varnish uniformly, making it well-suited for motor winding insulation, transformer work, and similar coil or winding applications. Installation is performed by licensed electricians and qualified winding technicians working on rotating equipment and stationary electrical assemblies.

This tape is suited for electrical insulation tasks in both commercial and industrial settings. Common applications include motor rewinding, coil wrapping, and slot insulation in transformers and generators. The no-adhesive, varnish-impregnated construction makes it a traditional choice for jobs where adhesive residue would interfere with varnish treatment processes or where cloth layering is required for mechanical and dielectric protection. It is sold by the roll and carries a minimum order quantity of 20 rolls.

Key Features

• Varnished cotton cloth construction — no adhesive, bonds through conforming wrap and varnish saturation
• Flexible cloth base conforms to irregular surfaces including coil windings and conductor bundles
• 0.75 inches wide x 60 feet per roll for extended coverage on winding and insulation jobs
• Lightweight roll at 0.25 pounds for easy handling in confined spaces
• Sold by the roll with a minimum order quantity of 20 rolls

Compatibility

Designed as an OEM-style insulating tape for use in motor rewinding, transformer coil insulation, and general electrical winding applications where varnished cloth material is specified.

Installation Notes

Installation is typically performed by a licensed electrician or qualified motor winding technician. De-energize and lock out the equipment fully before applying any insulating tape to conductors or coil assemblies in accordance with NFPA 70E lockout/tagout requirements. Wrap the tape with consistent tension to avoid gaps or overlaps that could reduce dielectric performance. Do not stretch the cloth base excessively, as this may compromise the varnish coating integrity.

Technical Specifications

• Width: 0.75 inches
• Length: 60 feet per roll
• Weight: 0.25 pounds
• Material: Varnished cotton cloth, no adhesive
• Unit of Measure: Roll
• Minimum Order Quantity: 20 rolls
• UPC: 00054007048367

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000031629