HELLERMANNTYTON HIS-3 Heat Shrink Tubing Set, 3:1, 12 mm / 4 mm, Red 308-31211

Damaged cable insulation, exposed splices and loose wire bundles create short-circuit and abrasion risks. This heat shrink tubing set provides a reliable way to insulate, bundle and protect electrical connections in low-voltage work.

Who is it for

Electricians, panel builders, automotive technicians and maintenance crews who need a fast, permanent insulation solution for 12 mm cables and connectors.

Main features

• 3:1 shrink ratio: 12 mm pre-shrink diameter recovers to 4 mm for a tight fit over irregular shapes.
• Red polyolefin tubing for colour coding and easy identification of conductors.
• Continuous operating range from -55 °C to +125 °C, with shrink starting at +90 °C.
• Self-extinguishing material meets UL224 VW-1 flammability requirements.
• Dielectric strength of 20 kV/mm and 600 V rating for electrical insulation.

Specifications

• Series: HIS-3
• Shrink ratio: 3:1
• Pre-shrink diameter: 12 mm
• Post-shrink diameter: 4 mm
• Colour: Red
• Material: Polyolefin (PO)
• Operating temperature: -55 °C to +125 °C
• Minimum shrink temperature: +90 °C
• Dielectric strength: 20 kV/mm
• Flammability: Self-extinguishing (UL224 VW-1)
• Longitudinal shrinkage: max. 5%
• Voltage rating: 600 V
• Chemical resistance: Good against common fluids and solvents
• RoHS compliant: Yes

Tips

Use a hot air gun set to at least 90 °C and heat evenly around the tubing until it conforms to the substrate. Allow the sleeve to cool completely before moving the cable.