3M Heat Shrink Tubing 12 in Black 1.1 in ID PK10

Heavy-wall shrink tubing for large conductors

This 3M heat-shrink tubing is built for electricians and maintenance technicians who need to seal and protect heavy-gauge wire. Each piece starts at a 1.1 in inside diameter and shrinks to 0.37 in, covering wire sizes from 2 AWG up to 4/0 AWG. The pack contains ten 12 in lengths ready for individual use.

Cross-linked polyolefin with adhesive lining

The rigid, cross-linked polyolefin wall thickens to 0.12 in after shrinking, forming a durable barrier that resists abrasion, acids, alkalis and UV exposure. An inner adhesive layer flows during heating to create a watertight seal around the connection. Individual pieces allow precise cutting and placement on site.

Rated from -67 to 230 degrees F

The tubing maintains its protective properties across a wide temperature span, staying flexible in extreme cold and stable in high heat. No flame-retardant rating is claimed, so installers should verify local code requirements for fire-sensitive areas. The heavy wall and adhesive combine to deliver long-term environmental sealing in normal service.