HellermannTyton HIS-3 Heat Shrink Tubing, 130 mm Supplied Diameter, 3.5:1, Black, 1 m 321-11300

Electrical installers and maintenance crews rely on this HellermannTyton HIS-3 heat shrink tubing to insulate and protect large cable joints, splices, and connectors. With a supplied diameter of 130 mm and a shrink ratio of 3.5:1, it recovers to 37 mm, making it suitable for bundling or sealing bulky wire harnesses in industrial panels and heavy machinery.

Key specifications

• Product type: Heat shrink tubing
• Series: HIS-3
• Material: Polyolefin
• Adhesive lined: No
• Shrink ratio: 3.5:1
• Supplied diameter: 130 mm
• Recovered diameter: 37 mm
• Wall thickness after recovery: 1.5 mm
• Colour: Black
• Length: 1 m
• Operating temperature range: -55 °C to +125 °C
• Minimum shrink temperature: +90 °C
• Dielectric strength: >20 kV/mm
• Flammability rating: UL94 V0
• Halogen-free: Yes
• UV resistant: Yes

Why choose it

The high shrink ratio and wide operating temperature range make this tubing a dependable choice for demanding environments. Its polyolefin construction provides electrical insulation and mechanical protection without adhesive, allowing easy repositioning before heat is applied.

Ideal use cases

• Insulating large cable joints and splices
• Bundling wire harnesses in industrial equipment
• Protecting connectors from abrasion and moisture
• Repairing damaged cable jackets

Good to know

The tubing is halogen-free and UV resistant, making it suitable for outdoor applications where exposure to sunlight is a concern. It is supplied in a 1 m length, ready to cut to the required size.