100pc Assorted Heat Shrink Solder Sleeves Box - 0.2mm² to 6mm²

100pc Assorted Box of Heat Shrink Solder Sleeves - 100 solder seal butt connectors in four colour coded sizes covering 0.2mm² up to 6mm², twenty-five of each.

These do in one pass what normally takes three. Slide the sleeve over the two conductors, warm it with a hot air gun, and the solder ring inside melts into the strands while the sleeve shrinks down and seals the joint at both ends. No crimpers, no soldering iron, no separate heat shrink to slide on afterwards - which is the point when the joint is halfway up a wheel arch or behind a dashboard where you can get a heat gun in but not two hands and a pair of crimpers. The solder makes it a proper electrical joint rather than a mechanical grip, so it will not work loose under vibration, and the sealed ends keep damp out of the copper.

Box contents (100 pieces total)
25 x white, 0.2 - 0.5mm²
25 x red, 0.5 - 1.5mm²
25 x blue, 1.5 - 2.5mm²
25 x yellow, 3.0 - 6.0mm²

Colour code
White 0.2-0.5mm², red 0.5-1.5mm², blue 1.5-2.5mm², yellow 3.0-6.0mm² - the same code as standard crimp terminals

Please note
These need a proper hot air gun, not a hairdryer. The solder ring has to reach melting point and flow into the strands, so keep the heat on until you can see the solder has run and gone shiny right through the joint. A sleeve that has shrunk but whose solder has not flowed looks finished and is not - it is the commonest way these get fitted wrongly. Twist or lay the conductors together inside the sleeve before heating, and let the joint cool undisturbed.

Suitable for
Loom and harness repairs, lighting and sensor wiring, trailer and towbar work, marine and caravan electrics, motorcycle and quad wiring, awkward access repairs, any joint that has to survive damp and vibration

Also known as solder sleeves, solder seal connectors, solder seal butt connectors, heat shrink solder connectors, waterproof solder connectors, or a solder sleeve assortment box.