Ancor Heat Shrink Tubing 1" x 3" - Yellow - 3 Pieces

Ancor Heat Shrink Tubing 1" x 3" in Yellow delivers the reliable wire protection marine electricians and boat owners demand when running critical electrical systems through salt spray, engine compartments, and wet bilge areas. After years on the water, any experienced boater knows that corroded or compromised wiring creates catastrophic failures—fuel pumps fail, navigation lights cut out, and bilge systems stop working when you need them most. This three-piece set gives you proven defense against water intrusion, oil saturation, and acidic corrosion that destroy standard electrical connections.

What sets Ancor tubing apart is its heat-activated adhesive lining that bonds tightly around wire bundles and terminal connections, forming a superior water, oil, and acid-resistant seal that withstands the harsh marine environment. Unlike commodity heat shrink that shrinks to only a 2:1 ratio, Ancor's tubing shrinks to a 3:1 ratio—meaning each piece covers a wider diameter range and gives you flexibility to seal everything from thin gauge wiring to thick multi-strand bundles with a single product. The yellow color coding makes it easy to identify circuits at a glance, essential when troubleshooting electrical gremlins in dimly lit engine rooms or after dark on the water.

Serious anglers, cruisers, and commercial operators rely on Ancor heat shrink for permanent repairs to trolling motor connections, battery terminals, through-hull fittings, and any splice that must survive repeated wet-dry cycles and temperature swings. The 1" diameter and 3" length make these tubes ideal for protecting wire joints at battery banks, securing navigation system harnesses, and sealing connections in live wells and baitwell plumbing. Simply slide the tubing over the joint, apply heat with a heat gun or lighter, and the adhesive-lined walls shrink down tight—no solder required, no exposed copper, no future corrosion.