Heat shrink tubing Radpol RCH1 WRJCC1271640010030C1 12.7/6.4×1 mm black

Radpol RCH1 heat shrink tubing WRJCC1271640010030C1 in black is a flexible, thermally responsive sleeve designed to provide insulation, mechanical protection and strain relief for wires, cable joints and connectors. With nominal dimensions of 12.7/6.4×1 mm and a predictable shrink ratio, this tubing reduces diameter to create a tight fit around components, improving electrical insulation and protecting against abrasion and minor environmental exposure. The material and construction make it suitable for repair work as well as new harness assembly and routing tasks.

Advantages

The tubing offers consistent shrink performance and a reliable wall thickness after recovery, ensuring uniform coverage and long-term mechanical support for splices and terminations. Its black color provides discreet appearance and light-blocking properties for sensitive lines. The product resists common environmental influences encountered in indoor electrical installations and cable assemblies, while remaining flexible for application on curved or bundled wires.

Suitable for

• Insulation of individual wires and multi-conductor splices
• Mechanical protection and strain relief at connector interfaces
• Repair of damaged cable jackets and sleeving
• Harness assembly and cable routing in electronic equipment
• Marking or bundling of wire groups where black tubing is acceptable

Key specifications

• Nominal recovered inner diameter: 6.4 mm
• Nominal unrecovered outer diameter: 12.7 mm
• Nominal wall thickness after recovery: 1 mm
• Color: black
• Material: heat-shrinkable polymer (cross-referenced to Radpol RCH1 family)
• Shrink ratio: designed to reduce to specified recovered diameter for secure fit

How to use

Cut the tubing to the required length and slide it over the cable, wire bundle or connector before making the final connection. Apply uniform heat using a heat gun, hot air station or other controlled heat source until the tubing recovers and conforms tightly around the component; avoid open flames. Allow the tubing to cool so it sets to its recovered dimensions and verify that the sleeve provides full coverage and strain relief where needed.

Usage recommendations

For consistent results, pre-position the tubing so it fully overlaps splices or connector bodies by several millimetres. Use a regulated hot air tool at a moderate distance and move the heat source evenly along the tubing to avoid localized overheating. Inspect recovered sleeves for gaps or thin spots; replace if full recovery or coverage is not achieved.