Ancor Adhesive Lined Heat Shrink Tubing (ALT) - 1/8" x 3" - 3-Pack - Black

The Ancor Adhesive Lined Heat Shrink Tubing (ALT) in 1/8" x 3" — 3-Pack, Black is a marine-grade electrical protection system designed for saltwater environments where standard heat shrink fails. This cross-linked polyolefin tubing with integrated heat-activated adhesive lining creates an impervious seal against salt water, oil, acids, and UV sunlight while providing strain relief on wire connections. Engineered for boats, fishing equipment, and offshore electrical systems, this tubing handles the corrosive demands that ordinary PVC cannot withstand.

Each 3-pack contains three 3-inch sections with a nominal 1/8-inch diameter that shrinks to 1/32 inch when heat-activated, suitable for wires 18 AWG and smaller. The cross-linked polyolefin construction is significantly more robust than PVC and will not burn or degrade under sustained heat exposure. The adhesive lining flows when heated, bonding to the wire and creating a watertight, chemical-resistant seal that prevents corrosion creep — a critical advantage in saltwater and high-vibration marine applications where moisture infiltration causes connection failure.

Ancor adhesive-lined heat shrink tubing is essential for weekend anglers reinforcing rod reel connections, offshore fishing crews protecting deck electrical runs, and marine technicians sealing battery terminals and bilge pump wiring. The 3-inch length accommodates single connections or terminal bundles without waste. Boaters and fishing captains rely on this product to prevent the electrical failures that strand vessels in open water — making it a standard component in emergency repair kits and routine maintenance procedures across the commercial and recreational boating industry.