This LV Automotive 19.1 mm dual wall red heat shrink is the kind of gear you grab when a normal sleeve will not cover the join across a 3 m run. The 19.1 mm bore starts wide enough for chunky lugs then pulls down tight with a 3:1 shrink ratio. The red colour helps you track positive feeds along trays and chassis rails without second guessing the line in a bundle. The dual wall tubing runs 3 m in a dispenser box with a lock so you can cut short tails or longer sections without the roll unravelling. The polyolefin outer and adhesive inner work together once you add heat so the liner flows around the cable and lugs and sets firm. That adhesive layer gives a solid seal around joints that live under bonnets or along frames where dust and splash are part of the trip.

• LV Automotive dual wall heat shrink tubing
• 19.1 mm internal diameter before shrinking
• 3:1 shrink ratio for a tight fit
• Supplied as a continuous 3 m length
• Adhesive lined interior improves sealing around joins
• Red colour for positive cable identification
• Suitable for heavier automotive wiring and lugs
• Packaged in a locking dispenser box for storage
• Dispenser format helps reduce offcut waste
• Ideal for workshop and on-vehicle electrical repairs

Q: What cable sizes suit the 19.1 mm dual wall heat shrink?

The 19.1 mm dual wall heat shrink suits larger automotive cables and lugs that fit comfortably inside its 19.1 mm internal diameter before shrinking. The 3:1 shrink ratio means it pulls down over smaller insulation once heated. This lets you cover chunky battery lugs and then grip the cable insulation. Always test fit a short offcut on your exact cable size before committing to a full run.

Q: How long is the heat shrink supplied in this box?

The dispenser box holds a continuous 3 m length of dual wall heat shrink. That gives enough tubing to cut several shorter pieces or one longer protective run. The length helps with tidy routing along trays or chassis sections. The locking dispenser makes it straightforward to measure and cut what you need with less waste.

Q: What benefits does the dual wall adhesive liner give?

The dual wall adhesive liner melts when heated and bonds to cable insulation and lugs. This creates a more sealed joint than single wall heat shrink alone. The liner helps block dust and grime around the connection. It also adds mechanical support around crimped or soldered joints under vibration.

Q: Why would I choose red heat shrink instead of black?

Red heat shrink helps you mark positive wiring along a loom or battery setup. The consistent red colour over the 3 m length makes circuit tracing simpler in tight engine bays. Clear colour coding also helps when more than one person works on the same setup. It reduces mistakes when connecting or fault finding later.