Solderin Heat Shrink Wire Connectors Yellow 12-10AWG, 4-6mm

Yellow heat shrink solder seal connectors, 12-10 AWG (4.0-6.0 mm²)

Solderin yellow heat shrink solder connectors join two wires in one step. Each connector is a heat-shrink sleeve with a ring of low-temperature solder in the middle. Heat it with a heat gun and the solder melts to join the wires while the sleeve shrinks down around the insulation. These are also known as solder seal, solder sleeve or solder butt connectors.

Wire size

• Colour: Yellow
• Wire gauge: 12-10 AWG
• Metric cable: 4.0-6.0 mm²

Not sure what size your wire is? Our wire gauge to mm chart converts metric cable sizes to AWG. Other sizes: White (26-24 AWG), Red (22-18 AWG), Blue (16-14 AWG).

How to use

1. Strip the insulation so the bare wire ends meet under the solder ring.
2. Insert both wires fully, so the insulation sits inside the sleeve at each end.
3. Heat evenly with a heat gun until the solder melts and flows and the sleeve has shrunk tight.
4. Let it cool fully before you move the wire.

No soldering iron or crimp tool needed; you only need a heat gun.

Good to know

• Suited to automotive, trailer, household low-voltage and DIY electronics wiring.
• On boats, marine standards such as ABYC E-11 do not allow solder as the only mechanical connection. Read our guide to solder connections for marine wiring before using them on a boat.
• Need a mix of sizes? The assorted connector kits include all four colours in a storage box.