3M 7000132720 EPS-300 Dual-wall Heat Shrink Tubing

Product Description

The 3M 7000132720 is a thin-wall, dual-wall heat shrink tubing designed for environmental protection and electrical insulation in demanding applications. The outer wall is constructed from flame-retardant, flexible polyolefin that is selectively irradiation cross-linked for reliable shrink performance. An internal layer of thermoplastic adhesive provides a sealed, moisture-resistant barrier when heat is applied. Available in black and red, this tubing ships in four-foot lengths or six-inch cut pieces and meets MIL-I-23053/4, Class 3 application specifications. Licensed electricians and electronics technicians install this product in both field and shop environments.

The EPS-300 series is suited for wire harnessing, connector back-sealing, and environmental protection of electrical terminations in residential, commercial, and industrial settings. The adhesive liner maintains high flow during shrink, allowing it to conform tightly around irregular geometries such as connector bodies and splices. A kit option containing 42 pieces of six-inch lengths in assorted sizes is also available for technicians who require a range of diameters on a single job. The tubing is appropriate for applications where moisture ingress, vibration, or mechanical abrasion is a concern.

Key Features

• Dual-wall construction with flame-retardant polyolefin outer wall and internal thermoplastic adhesive liner
• Selectively irradiation cross-linked outer wall for consistent, controlled shrink performance
• Adhesive layer maintains high flow and strong adhesion characteristics during heat application
• Meets MIL-I-23053/4, Class 3 application specifications
• Available in four-foot stick lengths and six-inch cut pieces; kit format includes 42 pieces in assorted sizes
• Standard colors: black and red

Compatibility

Designed as an OEM-style environmental protection sleeve for electrical wire, cable, splices, and connector terminations requiring dual-wall heat shrink insulation per MIL-I-23053/4, Class 3 specifications.

Installation Notes

Installation is performed by licensed electricians or qualified electronics technicians. De-energize all circuits before applying heat shrink tubing to any termination or splice. Use a calibrated heat gun set to the appropriate shrink temperature; open flame tools are not recommended as they can damage the adhesive liner or char the polyolefin outer wall. Follow NEC guidelines for insulation and conductor protection where applicable.