HELLERMANNTYTON HIS-3 Heat Shrink Tubing Set, 3:1 Ratio, 120 Pieces, Assorted Colours and Sizes 308-30312

Electrical insulation and cable management often require a reliable sealing solution that adapts to irregular shapes and provides long-term protection. The HELLERMANNTYTON HIS-3 heat shrink tubing set addresses this need with a comprehensive assortment of 120 pre-cut sleeves in seven colours and six diameters, all with a 3:1 shrink ratio for secure coverage over connectors and splices.

Who is it for

This set suits electricians, maintenance technicians, and electronics hobbyists who need a versatile, ready-to-use assortment for repairs, harness building, and strain relief. The multiple colours allow for easy circuit identification, while the range of sizes accommodates wires and components from 1.5 mm to 12.0 mm in diameter.

Main features

• 3:1 shrink ratio ensures tight, conformal fit over irregular shapes
• Cross-linked polyolefin material offers excellent electrical insulation and mechanical protection
• Assorted colours: black, red, blue, yellow, green, clear, and white for colour-coding
• Six diameters: 1.5, 3.0, 4.5, 6.0, 9.0, and 12.0 mm before shrinking
• 120 pieces, each 100 mm long, pre-cut for convenience
• Operating temperature range from -55°C to +135°C, minimum shrink temperature +90°C
• Dielectric strength 20 kV/mm, flammability rating UL224 VW-1

Specifications

• Shrink ratio: 3:1
• Material: cross-linked polyolefin
• Operating temperature: -55°C to +135°C
• Minimum shrink temperature: +90°C
• Dielectric strength: 20 kV/mm
• Flammability: UL224 VW-1
• Tensile strength: 15 MPa
• Elongation at break: 400%
• Water absorption: <0.1% (ASTM D570)
• Standards: UL224, CSA C22.2 No. 198.1

Tips

Use a heat gun set to the recommended temperature and apply heat evenly around the tubing until it fully conforms to the substrate. Avoid overheating to prevent damage to the tubing or the underlying components.