HellermannTyton HIS-3 Heat Shrink Tubing 12.7/4.2 mm, Black, 1.2 m 308-12400

This HellermannTyton HIS-3 heat shrink tubing stands out with its 3:1 shrink ratio, allowing it to conform tightly over connectors and irregular shapes. Supplied at 12.7 mm internal diameter, it recovers to 4.2 mm, providing a secure, professional insulation for cables and splices. The black cross-linked polyolefin material offers good chemical and UV resistance, making it suitable for demanding environments.

Highlights

• 3:1 shrink ratio for snug fit over components
• Supplied ID 12.7 mm, recovered ID 4.2 mm
• Length 1.2 m, cut length packaging
• Operating temperature -55 °C to +135 °C
• Self-extinguishing, UL224 VW-1 rated

In daily use

Slide the tubing over the joint, apply heat above +100 °C, and it shrinks evenly to insulate and protect. The recovered wall thickness of 0.76 mm provides mechanical strength and dielectric strength over 20 kV/mm. Suitable for electrical insulation, strain relief, and bundling in automotive, industrial, and maintenance applications.

Full specifications

• Product type: Heat shrink tubing
• Series: HIS-3
• Shrink ratio: 3:1
• Supplied internal diameter: 12.7 mm
• Recovered internal diameter: 4.2 mm
• Length: 1.2 m
• Colour: Black
• Material: Cross-linked polyolefin
• Operating temperature range: -55 °C to +135 °C
• Minimum shrink temperature: +100 °C
• Dielectric strength: > 20 kV/mm
• Tensile strength: > 15 MPa
• Flammability rating: UL224 VW-1 (self-extinguishing)
• Approvals: UL, CSA
• RoHS compliance: Yes
• Halogen-free: Yes
• UV resistance: Good (for black)
• Chemical resistance: Good
• Wall thickness (recovered): 0.76 mm
• Packaging type: Cut length

Final note

Reliable insulation for professional cable management, backed by HellermannTyton's quality.