Wirefy Heat Shrink Tubing 3/8 Inch, 3:1 Ratio, Adhesive Dual-Wall Waterproof, 50 ft Roll, UL Listed, Black

Wirefy Heat Shrink Tubing — 3/8 inch, 3:1 ratio

Meet Wirefy’s adhesive-lined heat shrink tubing, engineered to provide a tight, secure wrap around wires and cables. With a 3:1 shrink ratio, this tubing reduces to one third of its original diameter, helping you create neat, dependable terminations and protected splices without excess bulk.

The dual-wall design features an adhesive lining that melts and seals as the tubing shrinks, forming a waterproof and oil-resistant bond. This combination helps shield connections from moisture, humidity, and exposure to oils in a range of environments, from boats and cars to outdoor equipment and industrial setups.

Why it works for your projects

• 3:1 shrink ratio: achieves a compact, secure fit on individual wires or small bundles.
• Adhesive-lined seal: creates a waterproof barrier that helps protect splices and terminations.
• 50 ft roll: provides flexibility to cut to any length, ideal for custom cable runs and long runs without waste.

• Durable insulation: resists abrasion, heat, and exposure to oils, supporting reliability in tough environments.
• UL-listed safety: confirms adherence to safety and performance standards for electrical and automotive use.

Finished in classic black, this tubing blends with most wiring layouts for a clean, professional look. Whether you are upgrading a vehicle harness, protecting marine leads, or tidying outdoor electrical runs, Wirefy offers a practical solution that pairs performance with ease of use.

Suggestions for use

• Plan your run lengths, cut evenly, then apply heat to shrink and seal for a streamlined finish.
• Use on exposed wires in automotive or outdoor applications to minimize wear and moisture ingress.

Note: This product is designed to provide reliable insulation and protection as part of standard electrical or automotive maintenance. Results can vary with application, heat source, and environmental conditions.