3M 7010305752 Heat Shrink Polyolefin Tubing 2.5:1 48in Black

Product Description

The 3M 7010305752 is a multiple-wall, semi-rigid heat shrink tubing designed for electrical splices and terminations that require both mechanical protection and a sealed, moisture-resistant interior bond. Built from co-extruded polyolefin with selective cross-linking, the tubing features a 2.5:1 shrink ratio and an integral meltable inner wall that flows into voids during heat application, creating a watertight seal around conductors and connections. Each stick measures 48 inches and is black in color. This product is sold in a case of 24 pieces. Electricians and low-voltage technicians rely on this tubing where standard single-wall heat shrink is insufficient.

This tubing is suited for applications in electrical, electronics, and industrial wiring environments where moisture ingress, corrosion, or mechanical abrasion are concerns. Typical uses include wire splices, connector backshells, cable bundling, and strain relief in both indoor and outdoor installations. The semi-rigid wall construction holds its shape during and after installation, making it appropriate for exposed runs and harsh-environment wiring tasks encountered in commercial and industrial electrical work.

Key Features

• 2.5:1 shrink ratio accommodates a wide range of conductor and connector diameters
• Co-extruded multiple-wall construction with meltable inner wall seals voids and resists moisture
• Semi-rigid polyolefin outer wall provides mechanical protection after recovery
• 48-inch stick length reduces the need for mid-run splicing on longer terminations
• Black color provides UV resistance and professional finish on exposed wiring
• Case quantity of 24 pieces supports stocking for high-volume or recurring electrical service work

Compatibility

Designed as an OEM-style heat shrink solution for electrical splices, terminations, and cable protection applications requiring a dual-wall, adhesive-lined polyolefin tubing with a 2.5:1 shrink ratio.

Installation Notes

Installation should be performed by a qualified electrician following applicable NEC guidelines. De-energize and lock out all circuits before applying heat shrink tubing to any splice or termination. Use a calibrated heat gun rather than an open flame to ensure even recovery and full melt-out of the inner adhesive wall without scorching. Allow the tubing to cool completely before restoring power or handling the connection.

Technical Specifications

• Shrink Ratio: 2.5:1
• Wall Type: Multiple-wall semi-rigid
• Material: Polyolefin (co-extruded, selectively cross-linked)
• Color: Black
• Stick Length: 48 inches
• Case Quantity: 24 pieces
• Weight: 0.28 pounds
• UPC: 00051128598276

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010305752