Heat shrink tube Hellermann Tyton 308-10903

The Hellermann Tyton 308-10903 heat shrink tube is a versatile insulation sleeve designed to protect and insulate electrical connections and cable assemblies. The product is 5 meters long and covers a diameter range from 3 mm (collapsed) to 9 mm (expanded), making it suitable for bundling wires, insulating splices and providing abrasion resistance and environmental protection for cables in a variety of installations.

Advantages

The heat shrink tube offers reliable electrical insulation and mechanical protection while maintaining a compact profile after shrinking. Its broad shrink ratio accommodates different cable diameters and reduces the need for multiple sizes. The material provides resistance against abrasion and moisture ingress, helping to extend the lifetime of cable assemblies. The product is designed for consistent, even shrinking for a secure fit around connectors and splices.

Suitable for

• Insulating wire splices and solder joints
• Cable harness bundling and strain relief
• Repairing damaged cable jackets and protecting exposed conductors
• Providing environmental protection in automotive and industrial applications

Key specifications

• Length: 5 m
• Maximum diameter before shrinking: 9 mm
• Minimum diameter after shrinking: 3 mm
• Shrink ratio: suitable for reducing from 9 mm to 3 mm nominally
• Material properties: heat-shrinkable polymer providing electrical insulation and mechanical protection

How to use

Measure and cut the heat shrink tube to the required length, allowing enough coverage beyond the splice or connector. Slide the tube over the cable or joint before making the final connection where applicable. Apply uniform heat using a heat gun, hot air tool, or controlled heat source, moving the heat source along the tube until it conforms tightly to the underlying cable and the diameter reduces to its minimum. Allow the sleeve to cool and set before handling the assembly further.

Usage recommendations

Use a regulated heat gun to ensure even shrinking and avoid overheating. Keep a safe distance between the heat source and the tube surface and rotate or move the assembly to achieve uniform shrink. For critical or sealed applications, consider combining the tube with adhesive-lined variants or additional sealing methods if moisture ingress protection is required.