This Narva 2.4mm red heatshrink tubing dispenser gives you a full 20 m run of tube for tidying joins and terminations on smaller cables. The pre-shrunk diameter of 2.4 mm suits fine accessory wiring, then pulls down to around 1.2 mm once heated over the joint. The operating range from -75°C to +125°C means it handles cold mornings in the High Country and warm bays around engines.

The tube is cross-linked polyolefin with a flame-retardant, self-extinguishing spec rated for between -75°C and +125°C. The red colour keeps your circuits easy to trace in crowded looms over the full 20 m length. The wall thickness is balanced for flexibility while still gripping tight on cables down to 1.2 mm internal diameter. The dispenser box sits neatly on the bench so you can pull off just the length you need on each job without wasting gear.

• Narva 2.4mm red heatshrink tubing in dispenser box
• Supplied as a continuous 20 m length for workshop use
• Pre-shrunk internal diameter of 2.4 mm suits small wiring
• Recovers down to approximately 1.2 mm internal diameter when heated
• Manufactured from flame-retardant self-extinguishing cross-linked polyolefin
• Operating temperature range from -75°C to +125°C for automotive environments
• Provides electrical insulation and strain relief on cable joints and terminals
• Red colour aids circuit identification along wiring looms
• Dispenser carton allows controlled payout and reduces tangles and waste
• Suitable for general automotive electrical wiring and cable protection applications

Q: What shrink ratio does this Narva heatshrink achieve?

This tubing shrinks from 2.4 mm down to about 1.2 mm internal diameter. That lets it clamp firmly over small gauge wiring and compact terminals. For best results cut the length you need, slide it over the join, then apply even heat until it fully recovers. Make sure the cable size matches that 1.2 mm recovered diameter so the grip stays solid.

Q: How long is the heatshrink in this dispenser box?

The dispenser holds a continuous 20 metres of tubing. That length suits workshop benches where you are constantly terminating or repairing wiring. You can unspool only what you need each time, which cuts down offcuts and keeps the rest clean. The box also protects the tube from dust and sunlight while it sits on the shelf.

Q: What temperature range can this Narva heatshrink handle?

The operating temperature range is from -75°C to +125°C. That spread covers under-bonnet sections near engines as well as chassis runs more exposed to cold. It means the tube stays flexible instead of cracking in low temperatures. At the higher end it resists softening around standard automotive engine bay heat levels.

Q: What material is this Narva heatshrink made from?

The tubing uses a flame-retardant, self-extinguishing cross-linked polyolefin. This material provides good electrical insulation around joins and terminals. The flame-retardant behaviour helps the tube stop burning once the heat source is removed. Cross-linking improves heat resistance across the -75°C to +125°C operating band so it holds shape over time.