These Ancor Heat Shrink Butt Connectors offer heat activated adhesive built into the sleeve of the heat shrink tubing. Adhesive heat shrink is the superior way to make a moisture resistant electrical splice that resists corrosion in marine and outdoor environments.
Connectors are color coded according to applicable wire size: AWG 22-18 Red; AWG 16-14 Blue; AWG 12-10 Yellow
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Wire Size Range AWG
Red, Blue, Yellow
Shrinks to form a water tight seal and the ultimate vibration and strain relief
Tinned for corrosion resistance
Pure copper for maximum current flow
Brazed seam for maximum strength
UL listed and CSA recognized
22-18, 16-14, 12-10 AWG
Terminals and Connectors
how many connectors in a package?
purchased the 25 connector package.
I don't remember.
I don't remember.
how many butt connectors in a 3 pack ?
how to use them?
These are the best. Use a quality crimper, not just the flat one on your wiring tool. When heating, make sure you have a heat deflector that will help wrap the heat around the connector. Do not use a torch or lighter. Good luck!
I stripped the ends of the two wires to be connected and stuck them into either end of the butt connector. Then I used a heat gun gently to cause the two flared ends to shrink to fit and seal to the insulation on the wires. Worked great on my motorized kayak where I anticipate them getting wet often. Made it through last season without a problem.
You crimp them like a normal connector with a good quality crimper then you heat them with a heat gun and they shrink tight.
fail if exposed to salt water
These fail if they are expose to saltwater. The tiny pip of air enclosed between the two ends crimped into them draws moisture in when they are thermally cycled by alternating cold bilge water and engine heat, causing electrolysis inside of the joint. A more impervious joint is made with a sealant like liquid electrical tape or silicone within a standard butt joint.
Best connectors on the market
Only way to go
I use these for all electrical connections. Heat shrink is the only way to go in the marine environment. Blocks out moisture and prevents corrosion.