3M 7100025921 Bus Bar Heat Shrink Tubing 20 Ft

Product Description

The 3M 7100025921 is a heavy-duty bus bar heat shrink tubing designed to provide insulation and environmental protection for rectangular, square, and round bus bars in electrical distribution systems. Constructed from cross-linked, flame-retardant, track-resistant polyolefin, this tubing delivers reliable dielectric protection in demanding industrial and commercial electrical environments. It features a recovered inner diameter range of 15.43 to 24.14 inches, making it suitable for large bus bar profiles. Licensed electricians and electrical contractors are the primary installers of this product.

This tubing is used in electrical switchgear, panel boards, and bus bar distribution systems where insulation, flame resistance, and tracking resistance are critical requirements. The polyolefin construction ensures the tubing conforms tightly to rectangular, square, or round bus bar geometries upon heat application, creating a secure and uniform protective sleeve. It is well suited for both new installation and retrofit insulation projects in commercial and industrial facilities.

Key Features

• Cross-linked polyolefin construction provides flame-retardant and track-resistant performance
• Accommodates rectangular, square, and round bus bar profiles
• Recovered OD range of 15.43 to 24.14 inches covers large bus bar sizes
• Sold in 20-foot lengths to cover extended bus bar runs
• Designed for demanding commercial and industrial electrical distribution applications

Compatibility

Designed as an OEM-style insulation solution for large rectangular, square, or round bus bars in commercial and industrial electrical distribution and switchgear applications.

Installation Notes

Installation should be performed by a licensed electrician following applicable NEC guidelines. Always de-energize and lock out the bus bar system before applying or removing any insulating tubing. Use an appropriate heat gun to shrink the tubing evenly along the length of the bus bar, working from one end to the other to prevent air pockets. Do not overheat or scorch the tubing during application.

Technical Specifications

• Recovered OD Range: 15.43 to 24.14 inches
• Length: 20 feet
• Material: Cross-linked flame-retardant track-resistant polyolefin
• Weight: 1.06 pounds
• Minimum Order Quantity: 20 feet
• UPC: 00051135358788

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100025921