Heat-Shrink Tubing CellPack CR 9.5/4.7 - 3/8 inch Thin-Wall, Mixed Pack (MPN 8-7199)

CellPack thin-wall heat-shrink tubing CR 9.5/4.7 — 3/8 inch is a mixed pack of thermally shrinkable insulating sleeves designed for electrical insulation, protection and strain relief on wires, connectors and cable joints. The tubing has an original diameter of 9.5 mm and a recovered diameter of 4.7 mm (3/8 inch), providing a reliable reduction ratio suitable for a range of wiring and repair tasks. These thin-wall sleeves are intended for general electrical maintenance where compact insulation and close-fitting coverage are required.

Advantages

Thin-wall construction ensures a tight fit after heat application while adding minimal bulk to wiring assemblies. The tubing provides electrical insulation and mechanical protection against abrasion and light impact, and it offers strain relief at connection points to reduce stress on solder joints and crimped terminals. The mixed pack format supplies multiple pieces for repairs and small installations, improving convenience for technicians and hobbyists.

Suitable for

• Repairing damaged wire insulation
• Insulating soldered joints and splices
• Protecting connector terminals and cable transitions
• Harnessing and bundling small-diameter cables
• General electrical maintenance and prototyping

Key specifications

• Original diameter (before heat): 9.5 mm
• Recovered diameter (after heat): 4.7 mm
• Recovered size equivalent: approximately 3/8 inch
• Type: thin-wall heat-shrink tubing
• Primary functions: electrical insulation, mechanical protection, strain relief

How to use

Select a sleeve with a recovered diameter that matches the required finished fit and slide the tubing over the area to be insulated before making the permanent connection. Apply heat evenly along the length of the tubing using a heat gun, hot-air tool or other controlled heat source until the sleeve shrinks uniformly to the recovered diameter and conforms closely to the underlying conductor or connector. Allow the tubing to cool and verify that it provides a snug, continuous coverage with no gaps or air pockets.

Usage recommendations

Use a temperature-controlled heat source and maintain an appropriate distance to avoid overheating nearby insulation or components; inspect shrinked areas for full adhesion and mechanical stability. For applications requiring moisture or chemical resistance, consider selecting tubing with appropriate adhesive lining or a different material type.