Heat-Shrink Tubing CellPack CR 12.7/6.4 1/2" thin-wall, mixed lengths (MPN 8-7200)

CellPack thin-wall heat-shrink tubing CR with 12.7 mm expanded diameter and 6.4 mm recovered diameter (nominal 1/2") is supplied in a mixed-length pack. The tubing is made for electrical insulation, strain relief and protection of soldered joints, connectors and wire splices. Its thin-wall construction provides compact coverage while maintaining reliable dielectric separation and mechanical protection for wiring in electronics, automotive and general electrical installations.

Advantages

The thin-wall design reduces bulk and allows heat shrink to conform closely to cable assemblies and components. Shrink ratio from 12.7 mm to 6.4 mm enables use on a range of wire diameters and connectors. The material provides consistent dielectric properties and protects against abrasion, light mechanical stress and incidental moisture. Supplied in mixed lengths for flexible usage and reduced waste when working on varied cable runs.

Suitable for

• Insulating soldered joints and wire splices
• Providing strain relief at connector exits and terminals
• Protecting wiring in electronic devices and control panels
• Repairing or reinforcing automotive wiring harnesses
• Color-coding or bundling small cable groups (where applicable)

Key specifications

• Expanded diameter: 12.7 mm
• Recovered diameter: 6.4 mm
• Nominal size: 1/2"
• Wall type: thin-wall
• Pack contents: mixed lengths
• Primary functions: electrical insulation, strain relief, mechanical protection
• Applications: electronics, automotive, general wiring

How to use

Select a piece of tubing long enough to cover the joint or connector plus a small overlap on each side. Slide the tubing over the wire or component before making the joint where possible, or position it over the connection afterwards if access allows. Apply heat evenly along the tubing using a heat gun or controlled heat source until it conforms to the substrate and the recovered diameter is achieved. Allow the tubing to cool and verify full compression and adhesion where required.

Usage recommendations

Use a regulated hot-air tool to avoid overheating nearby components; maintain a safe distance and move the heat source continuously. Choose appropriate tubing length and ensure surfaces are clean and free of sharp burrs. For environments with high vibration or exposure to fluids, consider additional mechanical protection or adhesive-lined variants where higher sealing is needed.