3M 7000133520 Heat Shrink Thin-wall Tubing FP301 1 in

Product Description

The 3M 7000133520 is a thin-wall heat shrink tubing from the FP-301 series, designed to provide reliable electrical insulation, physical protection, and chemical resistance across a wide range of industrial and military wiring applications. Each piece measures 48 inches in length with a 1-inch diameter and weighs 0.31 pounds. The FP-301 series is a polyolefin-based tubing known for its consistent 2:1 shrink ratio performance, making it a standard choice for wire bundling, termination protection, and cable harnessing work performed by electricians, MRO technicians, and military-spec assembly personnel.

This tubing is suited for use in industrial control panels, aerospace and military wiring assemblies, and commercial electrical installations where environmental protection and insulation integrity are required. Its thin-wall construction allows for a low-profile finished diameter while maintaining dielectric strength after shrink. Applications include connector backshell covering, wire splices, and cable strain-relief points in both indoor and outdoor environments.

Key Features

• Thin-wall polyolefin construction provides a balance of flexibility and dielectric protection after shrinking
• 48-inch length per piece allows for cutting to custom segments on the job
• 1-inch supplied diameter accommodates a range of wire bundle sizes
• Suitable for industrial and military-spec wiring applications
• Resists common industrial chemicals, moisture, and abrasion after recovery

Compatibility

Designed as an OEM-style heat shrink solution for industrial and military wiring harness and insulation applications where thin-wall polyolefin tubing meeting standard shrink-ratio requirements is specified.

Installation Notes

Installation is performed by electricians or wiring technicians using a heat gun or calibrated oven set to the appropriate recovery temperature for polyolefin tubing. De-energize all circuits before applying tubing to any live conductor or termination point. Avoid open-flame heat sources, as uneven heat distribution can cause incomplete or uneven shrink. Follow applicable NEC requirements for insulation ratings when used in panel or conduit wiring applications.

Technical Specifications

• Supplied Diameter: 1 inch
• Length: 48 inches
• Weight: 0.31 pounds
• Series: FP-301
• Wall Type: Thin-Wall
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000133520