Heat shrink tube HellermannTyton HIS-PACK-25,4/12,7 Green/Yellow, 5 m, Ø max 25.4 mm, Ø min 12.7 mm

Heat shrink tube HellermannTyton HIS-PACK-25,4/12,7 in green/yellow is a 5 m length of flexible polyolefin tubing designed for insulating, bundling and colour-coding cables and connectors in electrical installations and maintenance. The tubing is supplied in a nominal expanded diameter of 25.4 mm and recovers down to a maximum recovered diameter of 12.7 mm when heated, providing mechanical protection and improved electrical insulation for wire harnesses and cable joints.

Advantages

This heat shrink tube offers controlled radial shrinkage for reliably reducing diameter under heat, ensuring a close fit around irregular shapes and bundled cables. The green/yellow colour provides clear visual identification for grounding or protective earth conductors and supports organised cable management. The polyolefin material delivers good dielectric properties, abrasion resistance and long-term dimensional stability after shrinking.

Suitable for

• Insulation of repaired or spliced cables and connectors
• Colour-coding and identification of grounding or protective conductors
• Bundling and protecting multi-core harnesses in electrical panels and machinery
• Mechanical protection of cable joints in maintenance and installation tasks

Key specifications

• Material type: cross-referenced polyolefin heat shrink (polyolefin-based)
• Colour: green/yellow for protective earth identification
• Length: 5 m
• Nominal expanded outer diameter: 25.4 mm
• Maximum recovered outer diameter: 12.7 mm
• Shrink ratio: designed to recover substantially from expanded to recovered diameter when heat is applied
• Typical properties: electrical insulation, abrasion resistance and dimensional stability after shrink

How to use

Cut the required length from the 5 m roll and slide the heat shrink tube over the cable or joint before making the final connector or splice. Apply uniform heat using a hot air gun, heat tunnel or equivalent heat source until the tubing shrinks tightly around the substrate and forms a consistent seal. Allow the tubing to cool to room temperature before handling to ensure full recovery and stable mechanical properties.

Usage recommendations

For reliable results, ensure the tubing inner diameter in the expanded state is sufficiently large to fit over connectors or bundled cables, and heat evenly to avoid overheating nearby insulation. Use appropriate personal protective equipment and follow local electrical safety procedures when working on live or potentially live circuits. The green/yellow colour is intended for protective earth identification; follow applicable wiring colour codes and standards in your region.