HellermannTyton 300-30480 Heat Shrink Tubing 3:1, 4.8 mm, Black, 10 m

Electrical connections and splices need reliable insulation that withstands heat, moisture, and mechanical stress. The HellermannTyton 300-30480 heat shrink tubing provides a tough, flame-retardant seal for cables and wires, preventing short circuits and corrosion in demanding environments.

Who is it for

Electricians, panel builders, automotive technicians, and maintenance crews who require durable insulation for wire harnesses, terminations, and repairs. Its 3:1 shrink ratio suits irregular shapes and connectors.

Main features

• Cross-linked polyolefin with 3:1 shrink ratio for tight, uniform coverage
• Supplied inner diameter 4.8 mm, recovers to 1.6 mm for versatile fit
• Black colour blends with standard cable insulation
• 10 m length on a spool for multiple applications
• Operating temperature -55 °C to +135 °C for harsh conditions
• Dielectric strength >20 kV/mm for electrical insulation
• Flammability rating UL224 VW-1 (self-extinguishing)

Specifications

• Material: Cross-linked Polyolefin
• Shrink Ratio: 3:1
• Supplied Inner Diameter: 4.8 mm
• Recovered Inner Diameter: 1.6 mm
• Recovered Wall Thickness: 0.55 mm
• Length: 10 m
• Colour: Black
• Minimum Shrink Temperature: +90 °C
• Operating Temperature Range: -55 °C to +135 °C
• Dielectric Strength: >20 kV/mm
• Flammability Rating: UL224 VW-1
• Tensile Strength: >10.4 MPa
• Elongation at Break: >200 %
• UV Resistance: Good
• Halogen-Free: No

Tips

Use a heat gun set above 90 °C and apply heat evenly around the tubing until it fully shrinks and conforms to the substrate. Avoid overheating to prevent charring.