Cellpack Heat Shrink Tubing 9.5-4.8 mm, 10 m, Black, 2:1, Dispenser Box 144440

Electricians and maintenance technicians reach for this Cellpack heat shrink tubing when they need reliable insulation and strain relief for cables and connectors. The 10-meter roll sits in a practical dispenser box, so the tubing stays clean and tangle-free on the workbench or in the service van.

Key specifications

• Shrink ratio: 2:1
• Inner diameter before shrinking: 9.5 mm
• Inner diameter after shrinking: 4.8 mm
• Length: 10 m
• Colour: Black
• Material: Cross-linked polyolefin
• Operating temperature: -55 °C to +125 °C
• Minimum shrink temperature: +100 °C
• Dielectric strength: >15 kV/mm
• Rated voltage: 600 V
• Flammability: Self-extinguishing
• UV resistance: Good
• Chemical resistance: Good against common fluids and solvents
• Longitudinal shrinkage: Max. 5%
• Wall thickness after shrinking: 0.65 mm

Why choose it

The 2:1 shrink ratio gives a tight, professional finish over irregular shapes, while the cross-linked polyolefin offers excellent electrical insulation and mechanical protection. The dispenser box makes it easy to cut clean lengths without kinking or soiling the remaining tubing.

Ideal use cases

• Insulating splices and terminations in low-voltage wiring
• Providing strain relief for cable entries and connectors
• Bundling and colour-coding wires in control panels
• Protecting components from abrasion and light moisture

Good to know

The tubing is self-extinguishing and performs across a wide temperature range, making it suitable for both indoor and outdoor applications where UV exposure is moderate.