Ancor Adhesive Lined Heat Shrink Tubing (ALT) - 1" x 6" - 3-Pack - Yellow

Ancor Adhesive Lined Heat Shrink Tubing (ALT) in 1" x 6" format is purpose-built for professional automotive and marine electrical work where moisture resistance and reliable insulation are non-negotiable. Whether you're running a custom wiring harness through an engine bay, sealing splice connections on a lifted truck, or protecting exposed terminals in a performance build, this three-pack delivers the protection and durability that shop-grade installations demand. Heat shrink tubing is essential for any serious vehicle modification project where factory connectors simply won't survive vibration, temperature cycling, or environmental exposure.

The adhesive-lined construction sets Ancor ALT apart from standard tubing—the thermoplastic adhesive melts inward as you apply heat, creating a waterproof seal that bonds directly to the wire or connector underneath. This adhesive layer prevents moisture and contaminants from wicking back into splices or terminals, a critical failure point in harsh underbody environments. The 1-inch diameter accommodates multiple wire gauges and larger connector heads, while the 6-inch length provides ample coverage for terminal bundles, inline splices, and equipment connections. Yellow color coding aids quick identification during harness assembly and future troubleshooting, reducing confusion in complex custom installations.

Mechanics and fabricators rely on Ancor adhesive-lined heat shrink for high-vibration applications where solder joints or crimp splices need secondary protection—think engine harness reroutes, auxiliary lighting circuits, and trailer connector modifications. The three-pack ensures you have backup tubes if your first attempt requires repositioning, a practical reality in field installations. Suitable for DC electrical systems up to 12V and 24V automotive standards, this tubing works with standard heat guns or careful lighter application; a hair dryer alone will not generate sufficient temperature. For durability that outlasts the vehicle's service life, Ancor's marine-grade formulation handles salt spray, hydraulic fluid contact, and temperature swings from −40°F to 257°F.