3M 7100089307 Heat Shrink Polyolefin Tubing 48 Inches

Product Description

The 3M 7100089307 is a multiple-wall, semi-rigid heat shrink tubing designed for electrical and wire harness applications requiring a sealed, protected termination. Built from polyolefin, it uses a 2.5:1 shrink ratio and a co-extruded construction with selective cross-linking to produce an integral, meltable inner wall. When heated, the inner wall flows and bonds around conductors, connectors, or splices, creating a mechanically secure and moisture-resistant seal. Each stick measures 48 inches in length. Licensed electricians and wire harness technicians are the primary installers of this product.

This tubing is suited for use in electrical enclosures, control panels, marine wiring, automotive harnesses, and industrial equipment where a robust, sealed sleeve is required over conductors, splices, or connector backshells. The meltable inner wall makes it appropriate for applications where adhesive-style bonding and environmental sealing are necessary. It is supplied in individual 48-inch sticks with a minimum order quantity of 5 pieces per case.

Key Features

• 2.5:1 shrink ratio for coverage over a range of conductor and connector sizes
• Co-extruded semi-rigid polyolefin construction with integral meltable inner wall
• Selectively cross-linked outer wall provides structural rigidity after recovery
• Meltable inner wall flows on activation to seal and bond to substrate
• 48-inch stick length allows field cutting to required lengths

Compatibility

Designed as a multiple-wall heat shrink sleeve for electrical splices, connector backshells, and conductor terminations in residential, commercial, and industrial wiring applications.

Installation Notes

Installation is performed by licensed electricians or qualified wire harness technicians. De-energize and lock out all circuits before applying heat shrink sleeving to any conductor or termination. Use a calibrated heat gun capable of reaching the tubing manufacturer recovery temperature, and apply heat evenly along the length of the tubing to ensure uniform shrinkage and full inner-wall flow. Installations in wet or outdoor locations should comply with applicable NEC requirements for insulation and sealing methods.

Technical Specifications

• Shrink Ratio: 2.5:1
• Wall Construction: Multiple-wall, co-extruded semi-rigid polyolefin with meltable inner wall
• Stick Length: 48 inches
• Weight: 0.38 pounds
• Minimum Order Quantity: 5 pieces
• UPC: 00051128597187

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100089307