Heat-shrink tubing Cabletech 2.5 mm × 1 m, black

Cabletech heat-shrink tubing, 2.5 mm diameter before shrinking and 1 m length in black, is designed for insulating and protecting electrical connections, cable joints and exposed wire ends. The tubing provides mechanical protection against abrasion and strain while offering a compact way to organize and reinforce wiring. It is compatible with standard heat sources used for shrink tubing application and is suitable for a variety of installation environments where reliable insulation and moisture resistance are required.

Advantages

This heat-shrink tubing offers uniform shrinkage and tight fit around cables and connectors, creating a secure insulating layer that reduces the risk of short circuits and corrosion. Its black colour provides discreet cable management and helps reduce light exposure to sensitive wiring. The product’s nominal 2.5 mm pre-shrink diameter and 1 m length make it convenient for multiple repairs and small installation projects without the need for cutting many small pieces.

Suitable for

• Insulating soldered joints and crimped connections in electronics and DIY projects
• Automotive wiring repairs and harness protection
• Household electrical fixes and cable end protection
• Organizing and bundling small cable runs in audio, video and computer setups

Key specifications

• Material: heat-shrinkable polymer (thermal-shrink tubing)
• Nominal pre-shrink diameter: 2.5 mm
• Length: 1 m
• Colour: black
• Shrink ratio: typical for general-purpose tubing (provides tight fit after heating)

How to use

Cut the required length of tubing, slide it over the wire or joint, then apply heat evenly using a heat gun, lighter or other controlled heat source until the tubing conforms tightly to the underlying conductor and insulation. Allow the tubing to cool and verify a snug fit and complete coverage of the exposed area. For best results, avoid overheating and ensure the heat source is moved continuously to prevent local burning or deformation.

Usage recommendations

Choose tubing with appropriate pre-shrink diameter to ensure proper coverage after shrinking; for multi-conductor or larger connectors, use larger diameter variants. When insulating critical or high-voltage connections, confirm the tubing’s material properties meet the required temperature and dielectric specifications for your application.