This LV Automotive dual wall heat shrink with a 19.1 mm diameter is the sort of gear you throw in the ute and forget about until a cable gets nicked. The 3:1 shrink ratio means it bites down tight over lugs and joins once you hit it with heat. The 3 m length in the box gives enough coverage for trailer plugs and battery runs on a few different setups. The tubing runs a black polyolefin outer with adhesive inside so once it shrinks from 19.1 mm it seals the joint instead of just covering it. The dispenser box with lock stops the tube unravelling across the bench and keeps dust off the adhesive which helps on long trips through red dirt. The 3 m continuous run also lets you cut exact lengths for each job so you waste less gear and keep spares ready for the next weekend.

• LV Automotive dual wall heat shrink tubing

• Black 19.1 mm internal diameter before shrink

• Supplied as a continuous 3 m length

• 3:1 shrink ratio for tight fit

• Adhesive lined interior for sealed joints

• Dual wall construction for added abrasion resistance

• Dispenser box format for organised storage

• Locking feature on box to prevent unspooling

• Suitable for electrical wiring and cable protection

• Ideal for automotive and trailer harness repairs

Q: What heat source should I use with this dual wall heat shrink?

Use a controlled heat gun rather than an open flame. A heat gun gives more even heat along the 3 m length so the 3:1 shrink ratio activates properly. Open flames can scorch the black outer wall and damage insulation underneath. Steady passes with a heat gun also help the adhesive lining flow and seal cable joints.

Q: Can I cut the 3 m length into smaller sections?

Yes, the 3 m tube can be cut to any length with side cutters or a sharp knife. Cutting shorter pieces lets you match the sleeve to individual joins or terminals. Clean, square cuts help the 19.1 mm tube shrink evenly. Pre-measuring each run keeps waste low and leaves more heat shrink ready in the dispenser.

Q: Is this heat shrink suitable for trailer wiring repairs?

Yes, the 19.1 mm dual wall tube suits heavier trailer wiring and plug harnesses. The adhesive lining helps resist moisture and road grime around exposed joins. The 3 m supply gives plenty for multiple plug or junction repairs. Keeping the dispenser box in the tow rig toolbox means the gear is on hand at campsites or job sites.

Q: How should I store the dispenser box between jobs?

Store the dispenser box in a cool dry place away from direct sunlight. Excess heat can soften the adhesive lining before use. Keeping the lock engaged stops the 3 m length from uncoiling inside your toolbox. A tidy box also keeps dust off the 19.1 mm tube so it shrinks cleanly over cable insulation.