HellermanTyton HIS-3 Series Heat Shrink Tubing, 12.7mm Sleeve Diameter, 5m Sleeve Length - 308-31203 HIS-3-12/4-PO-X-CL
This heat-shrink tubing provides insulated protection for electrical and mechanical assemblies, offering a clear sleeve that recovers to a smaller diameter when heated. It is designed for use in industrial and electronics contexts where robust dielectric performance and an extended temperature range are required.
Features & Benefits
• 3:1 shrink ratio enables secure fit on varied component sizes
• Recovers to 4.0 mm maximum diameter for tight insulation
• Continuous operating range −55°C to +135°C for broad environments
• Dielectric strength 32 kV/mm to resist electrical breakdown
• Tensile strength 14 MPa for mechanical durability under load
• Heat-shock resistance 4 h/250°C to prevent dripping or cracking
Applications
• Suitable for insulating spliced wiring in automation panels
• Ideal for cable repair and marking in electrical installations
• Used with sensor and connector assemblies in electronics
• Can be used for mechanical protection of harnesses in machinery
• Useful for environmental sealing of terminations in control cabinets
What material characteristics affect long-term dimensional stability?
The sleeve is a cross-linked polyolefin which limits longitudinal change after recovery to approximately ±5% following heat application.
How does the product behave after prolonged exposure to elevated temperature?
After 168 h at 175°C the retained elongation is around 400% and the minimum tensile strength at heat ageing is 13 MPa, indicating maintained mechanical properties.
What flame and low-temperature behaviours should installers expect?
The material is flame-retardant and halogen-free
it passes a low-temperature non-cracking test and does not drip under heat-shock conditions.
How is the material supplied for on-site usage?
The sleeve is provided on a 5 m reel in a transparent finish for Visual inspection of underlying components.
