Heat Shrink Wire Joiners
Red Heat Shrink Wire Joiners for 3mm Wire
Red Heat Shrink Wire Joiners for 3mm Wire
Buy in bulk & save: 5-9 packets get 10% off per packet, 10+ packets get 20% off per packet. Red insulated crimp terminal…$25.00
Blue Heat Shrink Wire Joiners for 4mm Wire
Blue Heat Shrink Wire Joiners for 4mm Wire
Buy in bulk & save: 5-9 packets get 10% off per packet, 10+ packets get 20% off per packet. Blue insulated crimp termina…$25.00
Yellow Heat Shrink Wire Joiners for 5mm Wire
Yellow Heat Shrink Wire Joiners for 5mm Wire
Buy in bulk & save: 5-9 packets get 10% off per packet, 10+ packets get 20% off per packet. Yellow insulated crimp termi…$30.00
Heat shrink wire joiners combine a butt connector and a heat shrink sleeve. Crimp the wires in, then heat the sleeve so it shrinks tight over the join. 50 per pack.
Terminals are colour coded by wire size: red for 3mm wire, blue for 4mm and yellow for 5mm, so you can pick the right one without measuring.
| Product | Wire size |
|---|---|
| Red, 3mm wire | 3mm |
| Blue, 4mm wire | 4mm |
| Yellow, 5mm wire | 5mm |
Plain wire joiners cost less for dry, indoor joins.
Crimp them with a ratchet crimping tool: it will not release until the crimp is complete, so every join comes out the same. Browse all types in our crimp terminals range.
Common questions
Do I still need to crimp them?
Yes. Crimp both wires into the barrel first, then heat the sleeve evenly with a heat gun until it shrinks tight over the join. For dry joins, plain wire joiners cost less.
Which colour do I need?
Terminals are colour coded by wire size: red for 3mm wire, blue for 4mm and yellow for 5mm. In this range: blue 4mm wire, red 3mm wire, yellow 5mm wire.
How many come in a pack?
They come 50 to a pack, with no minimum order. Buy 5 to 9 packets for 10% off each, or 10 or more for 20% off, at checkout.