3M 7000132815 Varnished Cambric Electrical Tape

Product Description

The 3M 7000132815 is a varnished cambric electrical insulating tape designed for use in motors, transformers, coils, and other electrical assemblies where reliable insulation and moisture resistance are required. Constructed from straight-cut woven cotton cambric fabric that is oil primed and coated with a high-grade yellow electrical insulating varnish, this tape delivers flexible, moisture-resistant performance with a smooth finish. Each roll measures 0.75 inches wide by 36 yards long, making it well suited for wrapping and insulating coil leads, slot liners, and connection points in electrical equipment. Licensed electricians and motor winding shops are the primary installers.

This tape is used across residential and commercial electrical applications wherever varnished cambric is specified as an insulation medium. Common scenarios include motor rewinding, transformer coil insulation, bus bar wrapping, and general electrical assembly work. The smooth varnished surface allows clean layering in tight winding configurations. It is sold by the roll with a minimum order quantity of 48 rolls, making it practical for shops and service operations that maintain a standing inventory of electrical insulating materials.

Key Features

• Straight-cut woven cotton cambric fabric construction for consistent flexibility and conformability
• Oil-primed fabric base coated with high-grade yellow electrical insulating varnish
• Electrically insulating and moisture resistant with a smooth finish
• Roll dimensions: 0.75 inches wide by 36 yards long (19 mm x 33 m)
• Suitable for motor rewinding, transformer insulation, and electrical assembly work

Compatibility

Designed as an OEM-style varnished cambric insulating tape for use in electrical motor, transformer, and coil winding applications where a flexible, varnish-coated cotton fabric tape is specified.

Installation Notes

Installation is performed by licensed electricians or qualified motor winding technicians. De-energize and lock out all equipment per NFPA 70E requirements before applying insulating tape to any electrical component. Ensure all surfaces are clean and dry before wrapping to maintain proper adhesion and insulation integrity. Do not stretch the tape excessively during application, as distortion of the woven fabric can compromise insulation uniformity.

Technical Specifications

• Width: 0.75 inches (19 mm)
• Length: 36 yards (33 m)
• Material: Oil-primed woven cotton cambric with yellow electrical insulating varnish coating
• Finish: Smooth
• Weight: 0.38 pounds per roll
• Unit of Measure: Roll
• UPC: 00054007048350

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000132815