3M Heavy Wall Heat Shrink Cable Sleeve, Black Polyolefin

3M Heavy Wall Heat Shrink Cable Sleeve, Black Polyolefin

The 3M Heavy Wall Heat Shrink Cable Sleeve is built for professionals who need dependable protection over cable splices, terminations, and multi-conductor connections. Constructed from rugged black polyolefin, this heavy wall sleeve is available across a range of sizes — from an expanded diameter of 0.65" (recovering to 0.24") in a 6" length, to an 0.88" expanded diameter (recovering to 0.4") in a 6" length, up to a 2" diameter sleeve in a 12" length. This range lets installers match sleeve dimensions to the cable joint, splice, tap, or connector body being protected. The heavy wall build offers greater mechanical protection than thin-wall alternatives, and because the sleeve is heat-activated, it shrinks down tightly around irregular shapes to form a close, long-term protective fit for electrical and cable assemblies.

Key Features

• Sleeve Diameter & Length Range: Available from 0.65" expanded / 0.24" recovered diameter x 6" length, to 0.88" expanded / 0.4" recovered diameter x 6" length, up to 2" diameter x 12" length, so the right sleeve size can be matched to the connection being covered.
• Heavy Wall Construction: A thick-wall polyolefin design delivers greater mechanical strength, crush resistance, and long-term durability compared to standard thin-wall heat shrink tubing.
• Polyolefin Material: Flexible, chemical- and abrasion-resistant polyolefin construction conforms tightly around cable splices, connectors, and irregular shapes once shrunk.
• Heat-Activated Recovery: Installs with a standard heat gun or torch, shrinking down from its expanded diameter to a snug recovered fit for a secure, weather-resistant seal.
• Black Jacket: Black polyolefin finish provides a uniform, professional appearance while standing up to everyday jobsite handling.
• Versatile Coverage: Longer lengths are sized to fully enclose cable joints, taps, and connector bodies in a single continuous sleeve, reducing the need for multiple wraps of tape.

Technical Specifications

• Material: Polyolefin
• Color: Black
• Expanded Diameter Range: 0.65" to 2"
• Recovered Diameter Range: 0.24" to 0.4"
• Length Range: 6" to 12"

Typical Applications

• Cable Splice and Termination Protection
• Wire Harness and Cable Bundle Insulation
• Electrical Connector and Junction Sealing
• Industrial and Marine Cable Protection
• Strain Relief for Cable Assemblies
• Panel and Enclosure Cable Entry Protection

Why 3M?

3M has built a reputation across the electrical industry for engineering materials that hold up to demanding field conditions, and this heavy wall heat shrink cable sleeve line reflects that same commitment to quality. Its heavy wall polyolefin construction is built to protect cable splices and connections from abrasion, moisture, and everyday wear across the full available size range, helping installations stay reliable long after the job is finished. For electricians and cable technicians who need a heat shrink sleeve they can depend on, 3M delivers consistent, professional-grade protection backed by proven material science.