3:1 Ratio Heat Shrink Tubing – Black Polyethylene With Adhesive Lining, Waterproof, Flame Retardant, Insulated Wire Sleeve For Automotive, Electrical & DIY Repairs

About This Product

This heat shrink tubing is the real deal for anyone who wants to protect their wires and connections the right way.

It’s got a 3:1 shrink ratio, which means it tightens down to a third of its original size when you heat it – so you get a super snug fit that doesn’t slip or loosen.

The real magic is in the dual-layer design: the outer polyethylene layer resists abrasion and insulates against electricity, while the inner adhesive melts as you heat it, sealing out moisture and making it waterproof.

Just slide it over your wire splice or joint, hit it with a heat gun or even a lighter, and it shrinks evenly and fast.

No mess, no fuss.

It’s flame retardant too, so it’s safe for automotive engines, household electronics, or any DIY electrical project.

Whether you’re fixing a car harness or insulating a cable at home, this stuff gives you a clean, professional finish.