TICONN TICONN-2172 Heat Shrink Butt Connectors, 100-Pack, Blue, 3:1

Dual-wall heat-shrink tubing with an adhesive lining helps seal each crimp against moisture, making these connectors practical for wiring in vehicles, boats, and outdoor equipment.

The pack contains 100 blue butt connectors sized for 16–14 AWG wire. A tinned copper barrel provides the crimp connection, while the tubing shrinks around the splice when heat is applied.

Need a wire splice that combines a crimp connection with a moisture-sealing sleeve? This design brings both steps together in one connector.

Why it’s worth it

The seamless tinned copper barrel grips the inserted wires, and its thicker construction is designed to support current flow while helping reduce voltage drop and heat buildup. Around the barrel, dual-wall polyolefin tubing and heat-activated adhesive form a 360-degree seal as the connector shrinks. The 3:1 shrink ratio lets the sleeve contract around the connection, helping keep moisture out and reduce corrosion.

That combination is useful where wiring may encounter damp conditions, such as marine installations, vehicle engine bays, trailers, or outdoor speakers. Compared with a basic butt splice that relies only on its crimp, this connector adds heat-shrink tubing and adhesive as part of the same splice.

Customer feedback often highlights use in automotive repairs and satisfaction with the heat-shrink function. Experiences with crimping, wire retention, and shrinkage are mixed, so making a secure splice means matching the connector to the wire gauge and crimping it properly before applying heat.

Quick overview

This is a 100-piece set of blue insulated butt-splice terminals. Each connector is made with a copper contact and polyolefin insulation, with a heat-activated adhesive lining under the outer tubing. The specified fit is 16–14 AWG wire, and the 3:1 shrink ratio is intended to seal around the completed crimp.

The color helps identify the size during wiring work, while the butt-splice format joins two wire ends inline. Together, those details make the set useful for repairs and wiring projects where a compact splice and added moisture protection are priorities.

Getting the most from it

Strip the wire ends, insert them into the connector, and crimp with a standard crimping tool. Then apply heat so the tubing contracts and the adhesive activates around the splice. Keep the wire size matched to the connector’s 16–14 AWG rating, and check that both ends are seated before crimping. This straightforward sequence suits repeat wiring tasks, from replacing a section of vehicle wiring to joining leads for a boat accessory.

The insulated sleeve also helps cover the crimped area, while the adhesive lining is designed to seal around it. For projects where moisture protection matters, that integrated construction provides a different approach from using a bare crimp terminal and adding separate covering afterward.

When it makes sense

Choose this set for marine, automotive, home, trailer, and outdoor wiring projects that use 16–14 AWG wire and call for an insulated butt splice. It can be used for tasks such as connecting vehicle wiring or wiring boat consoles and bilge pumps, where a sealed splice is useful. The 100 blue connectors provide a ready supply for multiple repairs or installations in that wire-size range.

It suits you if you want a crimp-style inline connector with heat-shrink tubing and adhesive built into the sleeve. The copper barrel handles the electrical connection, and the shrinking outer layer helps protect the joint from moisture—useful features for practical wiring work in vehicles, boats, and other exposed settings.