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: soon
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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
What Is a Solder Wire Connector?
+
A solder wire connector is a heat-shrink tube with a ring of solder built into the middle.
Strip your
wires, slide them in from each side, apply heat, and the solder melts to fuse the wires together while
the sleeve shrinks and seals the joint watertight — no separate soldering iron, flux, or crimping tool
needed.
I Just Need a Single Wire Size. Where Can I Get It?
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SolderGrip comes in three kit sizes — 50pc, 100pc, and 500pc boxes — each with all 4 color-coded sizes
included in the same ratio, so you're never stuck with only one gauge. If you mainly need one size,
the 50pc box still gives you a working supply of all 4 without buying the full 500pc kit.
What's Included in the SolderGrip Waterproof Kit?
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Every kit includes all 4 color-coded sizes, so you've got the right connector for whatever gauge wire
you're working with:
- Yellow — 12-10 AWG, 4-5 mm² — 5 pcs (50pc box) / 10 pcs (100pc box) / 40 pcs (500pc box)
- Blue — 16-14 AWG, 1.5-2.5 mm² — 13 pcs (50pc box) / 30 pcs (100pc box) / 180 pcs (500pc box)
- Red — 22-18 AWG, 0.5-1 mm² — 22 pcs (50pc box) / 35 pcs (100pc box) / 200 pcs (500pc box)
- White — 26-24 AWG, 0.25-0.34 mm² — 10 pcs (50pc box) / 25 pcs (100pc box) / 80 pcs (500pc box)
Could I Use a Small Butane or Propane Torch Instead of a Heat Gun?
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A heat gun is recommended because it delivers even, controlled heat across the whole connector.
An open
flame like a torch or lighter can work in a pinch, but it's easy to apply heat unevenly or scorch the
sleeve before the solder fully flows — a heat gun gives you the most reliable, repeatable seal.
Will SolderGrip Work With Different Types of Wires?
+
Yes. The 4 color-coded sizes are built to match a wide range of standard wire gauges, so whether you're
working on thin electronics wiring or heavier automotive or marine cable, there's a size in the kit
built for it.
Are These Connections Weatherproof?
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Yes — SolderGrip connections are IP67 rated, meaning they're built to withstand submersion, not just
splashing. Once sealed, moisture, salt spray, and rain don't get to the copper underneath.
What's the Maximum Wire Size SolderGrip Can Handle?
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The Yellow connector is the largest in the kit, rated for 12-10 AWG wire (4-5 mm² diameter) — suitable
for heavier automotive and power wiring. For anything larger than that, you'd need a bigger connector
than what's included in the standard kit.
Can These Be Used in an Engine Compartment (for example, a Ford F350 Diesel)?
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Yes. SolderGrip connections are built to handle the heat, vibration, and occasional moisture exposure
of an engine bay — which is one of the more demanding environments a wire connection can be in.
Can SolderGrip Connectors Be Used for Outdoor Projects?
+
Yes — the same IP67 waterproof seal that protects a connection in an engine bay or boat bilge holds up
just as well outdoors, whether that's exterior lighting, a trailer harness, or anything else exposed to
the weather.
How Long Does Shipping Take?
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Orders ship within 1-2 days.
Is There a Warranty or Guarantee With SolderGrip Products?
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Yes — every SolderGrip order is backed by a 99-day money-back guarantee. If it doesn't hold up, you get
your money back.
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
|
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
|