This KT Accessories adhesive heat shrink with a 25 mm diameter is the bit of gear you throw in the box for wiring jobs that need to stay put. The tube starts at 25 mm internal size so it suits thicker battery leads, trailer plugs and multi-core joins. Once you hit it with heat over around 120°C it pulls in tight and the inner glue grabs the insulation for a solid, sealed finish.

The dual wall polyolefin construction ends up a few millimetres thick once shrunk, so it handles bumps, vibration and road grime on runs exposed under the chassis or in the engine bay from -55°C to 125°C. The black outer wall helps with UV in Aussie sun while keeping the wiring run tidy and low key. For anyone re-doing lugs or repairing cable up to 25 mm diameter, this is smart buy workshop gear.

• Adhesive-lined dual wall heat shrink tube
• Suits cable and joins up to 25 mm diameter
• Contracts with heat for a tight seal
• Inner adhesive layer bonds to insulation
• Added mechanical protection compared with single wall
• Ideal for automotive, trailer and general wiring repairs
• Black finish keeps wiring runs neat and discreet
• KT Accessories brand electrical cable protection gear
• Suitable for 12V and 24V wiring systems
• Part number KT25A in the KT Accessories range

Q: What cable sizes suit this 25 mm adhesive heat shrink?

This heat shrink suits cable bundles or lugs that are slightly under 25 mm in diameter before heating. You want the tube just bigger than the join so it can contract down firmly. If the cable is too small the tube may not grip properly. For thinner wiring, a smaller diameter size is the better choice.

Q: Can this dual wall heat shrink be used outdoors on vehicles and trailers?

Yes, this dual wall adhesive heat shrink is suitable for outdoor wiring on vehicles and trailers. The polyolefin outer wall and adhesive inner layer help protect joints from dust and splash water. Correct installation with full shrink and glue flow is important for best sealing. Regular inspection of exposed wiring runs is still recommended on touring rigs.

Q: Do I need any special tools to shrink this 25 mm tube?

A standard heat gun is the best tool for shrinking this 25 mm tube. The steady, controllable heat lets the outer wall contract and the adhesive flow without scorching the insulation. Open flames like lighters or torches can overheat and damage the tube or cable. Move the heat gun slowly around the join until the tube has fully conformed.

Q: Is this KT Accessories heat shrink suitable for both 12V and 24V wiring?

Yes, this KT Accessories adhesive heat shrink suits both 12V and 24V wiring systems. The tube simply provides mechanical and environmental protection around the electrical joint. It does not change how the current flows in the cable. Just match the 25 mm size and length to the specific cable and connector you are covering.