3M 7000148867 Heat Shrink Polyolefin Tubing 3/16 in Black

Product Description

The 3M 7000148867 is a multiple-wall, semi-rigid heat shrink tubing designed for reliable insulation and strain relief in electrical wiring applications. It features a 2.5:1 shrink ratio and is constructed from co-extruded, selectively cross-linked polyolefin with an integral meltable inner wall that flows and bonds to the substrate upon heating. Each piece measures 6 inches in length and ships in packs of 10 pieces. The meltable inner wall creates a moisture-resistant seal around conductors, terminals, and splices, making this tubing well suited for environments where environmental sealing is a priority alongside mechanical protection.

This tubing is used in residential and commercial electrical wiring, panel work, automotive harness repair, marine installations, and industrial control wiring where a durable, sealed termination is required. The semi-rigid wall provides added mechanical support to connections and splices. Electricians, marine technicians, and industrial maintenance techs commonly specify multiple-wall heat shrink tubing when a simple single-wall sleeve is insufficient for the environmental demands of the installation.

Key Features

• 2.5:1 shrink ratio provides a tight, conforming fit over connectors and splices
• Co-extruded polyolefin construction with integral meltable inner wall for environmental sealing
• Semi-rigid wall offers mechanical protection and strain relief beyond standard single-wall tubing
• 3/16 inch recovered diameter suits small-gauge conductors and terminals
• 6 inch piece length allows precise, waste-free installation cuts
• Black color for identification and UV resistance in exposed installations

Compatibility

Designed as an OEM-style replacement and general-use heat shrink sleeve for small-gauge wire terminations, splices, and connector sealing in electrical, automotive, marine, and industrial wiring applications.

Installation Notes

Licensed electricians and qualified maintenance technicians should de-energize all circuits before applying heat shrink tubing to any wiring. Apply heat evenly using a heat gun, working from the center of the sleeve outward, to ensure the inner adhesive wall flows uniformly and seals without voids. Avoid open-flame heat sources that can scorch the tubing or create uneven shrinkage. Follow applicable NEC requirements for wire insulation and termination methods in the jurisdiction where the work is performed.

Technical Specifications

• Shrink Ratio: 2.5:1
• Wall Type: Multiple-wall semi-rigid polyolefin with meltable inner wall
• Recovered Diameter: 3/16 inches
• Piece Length: 6 inches
• Color: Black
• Pack Quantity: 10 pieces per pack
• Case Quantity: 10 packs per case
• Weight: 0.03 pounds
• UPC: 00051128600962

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000148867