IP67 waterproof. UL certified. Solder flows at 280°F before the sleeve ever burns. You can see it happen through the transparent tube.
The wire connector that actually works — even if the last one you tried didn't.
- IP67 Waterproof
- UL Certified
- Marine Grade
- Easy To Use
Ships by: May 30th
🇺🇸
Fast US Shipping
99 Day Money Back Guarantee
Whether something wasn't quite right or you changed your mind, we've got you covered.
Active Mechanic Robert L.
Protect your wiring from faulty connection and shortages.
See SolderGrip In Action
See it in action
As Featured In
4 Simple Steps To Seamless Wire Connections
Prep Your Cables
Strip your wire insulation 1/3" on both wire ends & twist the strands together.
Insert & Connect
Use SolderGrip Sleeve to connect the wires together with the right connector size.
Heat To Seal
Apply heat with a heat gun, lighter or blow dryer while continuously rotating the wire.
Enjoy Durable Connection
Enjoy your secured and waterproof wire connection!
Prep Your Cables
Strip your wire insulation 1/3" on both wire ends & twist the strands together.
Insert & Connect
Use SolderGrip Sleeve to connect the wires together with the right connector size.
Heat To Seal
Apply heat with a heat gun, lighter or blow dryer while continuously rotating the wire.
Enjoy Durable Connection
Enjoy your secured and waterproof wire connection!
Frequently Asked Questions
I tried solder seal connectors before and they didn't work. Why is SolderGrip different?
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Almost always the same reason: the wrong solder alloy. Cheap kits use a low-grade mix that won't flow before the sleeve burns. SolderGrip's TriSeal ring is calibrated to flow at exactly 280°F — you watch it happen through the transparent tube. If it didn't flow last time, that kit was defective by design. Ours isn't.
Will these hold up on a boat? Salt water, constant vibration?
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That's exactly what IP67 means — tested to withstand submersion. The adhesive bands on both ends seal against moisture migration down the wire itself. Boat owners are our highest repeat-purchase segment.
Can I use a lighter instead of a heat gun?
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You can, but a heat gun gives even, controlled heat and a consistent result every time. The heat gun add-on in your cart saves $31.99 vs buying separately — it's exactly what we use in every demo.
What wire gauges are covered?
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White: 26–24 AWG · Red: 22–16 AWG · Blue: 16–12 AWG · Yellow: 12–10 AWG. Color coded — match the connector to your wire in under 3 seconds.
Customer Reviews
25,000+ Satisfied Customers
J
John D.
- Excellent quality and fast shipping
Reviewed
in the
United States
on
January 15, 2026
I couldn't be happier ! Talk about easy!! They fit snuck and allowed me to use without helping hands or wire holders. Using a heat gun they provided and it was super easy to slip it on, twist the wires and slip it back on to solder and seal in one swoop is wicked cool! The solder melted well and fus
42
people found this helpful
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G
Gabriel T.
- Great value for money
Reviewed
in the
United States
on
March 1, 2026
These things are priceless! Used to wire in my aftermarket Head unit radio. Work excellent! Seal AND solder wires together! I just hit them for about 15 seconds with my heat gun till shrink tube shrunk then solder melted to wire leads...boom, done!
28
people found this helpful
|
M
Michael R.
- Exactly what I needed
Reviewed
in the
United States
on
November 20, 2025
This solder sleeve works exactly how it is described and kills two birds with one stone of soldering wire as well as sealing the connection. It is a huge time-saver and a necessity for beginners.
15
people found this helpful
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