HellermannTyton HelaShrink 323 Heat Shrink Tubing 50.8mm Black 1.2m 2-Pack 323-50630

Electricians and maintenance technicians rely on this heat shrink tubing to insulate and protect cable joints, splices, and terminations in industrial and automotive environments. The HelaShrink 323 series provides a reliable 2:1 shrink ratio, ensuring a tight, secure fit over irregular shapes and connectors.

Key specifications

• Supplied inner diameter: 50.8 mm
• Recovered inner diameter: 25.4 mm
• Recovered wall thickness: 1.02 mm
• Length per piece: 1.2 m
• Quantity per pack: 2 pieces
• Material: Polyolefin (PO)
• Colour: Black
• Operating temperature range: -55 °C to +135 °C
• Minimum shrink temperature: +90 °C
• Dielectric strength: 20 kV/mm
• Flame retardant: Self-extinguishing
• Halogen-free: No
• UV resistant: No
• RoHS compliant: Yes
• Approvals: UL 224 VW-1, CSA

Why choose it

The thick recovered wall provides excellent mechanical protection and electrical insulation, while the self-extinguishing polyolefin material adds safety in flame-sensitive applications. Its wide operating temperature range makes it suitable for both cold and hot environments.

Ideal use cases

• Insulating low-voltage cable joints and splices
• Strain relief for connectors and terminations
• Bundling and protecting wire harnesses in automotive and marine applications
• Repairing damaged cable insulation

Good to know

This tubing is not halogen-free and offers no UV resistance, so it is best used indoors or in protected installations. Shrink with a heat gun at temperatures above 90 °C for full recovery.