Ancor Adhesive Lined Heat Shrink Tubing (ALT) - 3/8" x 6" - 5-Pack - Black

The Ancor Adhesive Lined Heat Shrink Tubing (ALT) in 3/8" x 6" size is a 5-pack of marine-grade electrical connectors engineered for serious saltwater applications. This is the go-to solution for anglers and boaters who demand corrosion-resistant connections that will outlast a season on the water. The tubing shrinks from 3/8" diameter down to 1/8", making it ideal for 12–8 AWG wire applications common in marine electrical systems, bilge pump installations, and battery connections.

Cross-linked polyolefin construction significantly outperforms standard PVC tubing—it won't burn, crack, or degrade under UV exposure from hours in direct sunlight. The heat-activated adhesive lining creates an impervious seal that protects against saltwater intrusion, battery acid, diesel fuel, and other corrosive substances found in marine environments. When heated, the inner adhesive flows and bonds around the conductor, providing both waterproofing and mechanical strain relief at the connection point. This combination eliminates the need for separate heat shrink tape and sealant, reducing both materials and installation time.

Weekend fishermen reinforcing loose connections on center console boats, serious offshore anglers sealing through-hull electrical penetrations, and boaters upgrading aging wiring harnesses all rely on adhesive-lined heat shrink for critical applications where standard shrink tubing fails. Each 6-inch section accommodates multiple small connections or a single larger terminal. The black color minimizes UV degradation and blends seamlessly with modern marine wiring looms. A 5-pack provides enough material for rigging a small vessel's charging system or repairing multiple connection points without reordering.