Black 18mm Heat Shrink 3:1 w/Adhesive | 15 cm x 3 Pcs.

This black 18mm heat shrink tubing with a 3:1 shrink ratio and integrated adhesive lining offers a robust solution for sealing and insulating electrical connections. Designed to provide a reliable waterproof barrier, it is ideal for protecting wiring in automotive, marine, and outdoor applications where moisture and corrosion are concerns. Each pack contains three 15 cm lengths, making it convenient for small repairs or custom projects.

The tubing shrinks to one-third of its original diameter, ensuring a tight, secure fit around connectors, terminals, and cables. The inner adhesive layer melts during heating, creating a permanent, environmentally sealed bond that prevents water ingress and resists vibration. This feature is particularly valuable for use in engine bays, lighting systems, or any exposed electrical assembly requiring long-term durability.

Constructed from flexible, flame-retardant polyolefin, the material withstands temperatures from -55°C to +125°C and offers excellent electrical insulation properties. The 18mm diameter accommodates larger cables or multiple wires, while the black finish provides a professional, unobtrusive appearance. For best results, apply heat evenly with a hot air gun until the tubing fully contracts and adhesive seeps from the ends. This product delivers dependable performance for both professional technicians and DIY enthusiasts seeking a permanent, weatherproof seal.