Heatshrink Cable Accessory HellermannTyton 416-12046, Polyolefin, Black, 8 mm, Pack of 1000

HellermannTyton 416-12046 is a black polyolefin heatshrink end cap with an 8 mm diameter, supplied in a pack of 1000. It is designed to provide insulation, strain relief and protection for polymeric, paper-insulated or lead-jacketed cables, including those with aluminium or steel armouring, where a compact protective sleeve is needed for wiring, harnessing or repair work.

Advantages

The heatshrink end cap features a thermoplastic adhesive that melts during shrinking to form a reliable seal, offering moisture resistance and enhanced mechanical protection. Its 3:1 shrink ratio allows it to fit a range of cable diameters tightly, while the polyolefin material delivers durable electrical insulation and resistance to environmental factors within its rated temperature range.

Suitable for

• Insulation and end sealing of low-voltage cables
• Strain relief for wiring harnesses and cable assemblies
• Repairing damaged outer jackets on polymeric or paper-insulated cables
• Protection of cable ends on armoured or lead-jacketed cable types

When it may not be suitable

This product is intended for low-voltage applications and may not be appropriate for high-voltage systems or for uses requiring specialised heat- or chemical-resistant sleeving beyond the material’s specified performance. Very large-diameter conductors or installations with extreme mechanical abrasion may require a different protective solution.

Key specifications

• Material: polyolefin with thermoplastic adhesive
• Colour: black
• Recovered internal diameter: suitable for 8 mm nominal application after shrinking (3:1 shrink ratio)
• Pack quantity: 1000 pieces
• Primary functions: electrical insulation, strain relief, end sealing

How to use

Slide the end cap over the cable end so the adhesive-lined portion covers the exposed jacket. Apply even heat (for example with a hot-air tool) until the polyolefin shrinks and the adhesive flows to form a continuous seal. Allow the sleeve to cool before handling to ensure the adhesive sets and the sleeve conforms tightly to the cable.

What to consider before purchase

• Confirm the cable outer diameter range to ensure compatibility with an 8 mm shrink sleeve and its 3:1 shrink ratio
• Verify that the product’s temperature and environmental resistance meet your application requirements
• Ensure a heat source suitable for controlled shrinking (hot-air gun or equivalent) is available for installation

Usage recommendations

For consistent results, pre-clean cable surfaces, position the end cap accurately, and apply heat evenly from the middle outward until the sleeve fully conforms. Use protective equipment and follow safe heating practices to avoid damage to cable insulation or surrounding components.