Kuject Heat Shrink Solder Seal Wire Connectors Kit 120PCS, Waterproof Butt Connector Heat Shrink Electrical Terminals, Insulated Solderless Wiring Splice Connectors for Marine Automotive Boat Truck
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Availability:
Only 5 left in stock, order soon!
Arrives
Friday, May 22
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Number of Items: 120
Features
- Time Saver: Solderless,crimpless, all you need is just a heat gun to finish the joint, much faster and easier than the old way
- Fit for Confined and Narrow Spaces: Can be bent after connection and no need to crimp or solder in the confined area, just control the temperature via a heat gun
- Waterproof and Seal Performance: There is two hot melt waterproof adhesive rings in each butt connector, which help it hold up better to moisture
- High Temperature Proof in A Short Time: Use exclusive material in the butt connectors to avoid shrink tubing melting before solder ring
- IATF16949:2016 Listed: The Kuject solder seal connectors meet the newest standard of International Automotive Task Force, which is the most standardized way for you to repair or modify your car
Color: RED BLUE YELLOW WHITE
Connector Type: Butt Splice
Contact Material: Phosphor Bronze
Insulation Material: Polyethylene
Terminal: Butt Terminal
Color: RED BLUE YELLOW WHITE
Connector Type: Butt Splice
Contact Material: Phosphor Bronze
Insulation Material: Polyethylene
Terminal: Butt Terminal
Material: PE,Tin
Brand: Kuject
Specification Met: Iso 90012008, Sgs and Ce Standards
Temperature Rating: Work Temp -67℉ - 257 ℉
Product Dimensions: 8.07"L x 4.33"W x 0.71"H
Maximum Voltage: 12 Volts (DC)
Number of Items: 120
Unit Count: 1 Count
Manufacturer: Kuject
Item Weight: 3.84 ounces
Item model number: SS120
Is Discontinued By Manufacturer: No
Date First Available: July 6, 2017
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, May 22
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Number of Items: 200
I picked up the Kuject Solder Seal Heat Shrink Butt Connectors for some wiring projects, and honestly, they’ve made my life way easier. If you’ve ever struggled with messy connections or worrying about durability, these will be your new best friend. The best part? The solder ring inside melts perfectly when heated, creating a strong, clean connection without needing extra tools or messy soldering. Plus, the heat shrink sleeve seals everything tight and waterproof, which gives me confidence that my connections won’t fail even in tough conditions. I tested these on my car’s wiring and some home electronics, and every joint has held up great — no corrosion, no loosening, just solid connections. They’re also super easy to use, even if you’re not a pro. With 200 pieces, I have plenty to keep me stocked for future projects. Overall, I’m really happy with the quality and performance of these connectors — they definitely take the headache out of wiring jobs.
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Reviewed in the United States on June 25, 2025 by Brandon S.
Number of Items: 120
TL;DR - the auto shop wanted $1600 for parts and labor. Between these, some parts, and a heat gun, my car runs better than it has in a couple years. Backstory: I have a 2013 Hyundai Veloster Turbo and the last couple of years coils and spark plugs have been going pretty fast. I figured it was something with the ignition wiring or something else electric. The shop I've used regularly quoted me $1600 for new spark plugs, coils, and a wiring harness (all they would use were coils direct from Hyundai for $970!) plus labor. For a 12 year old car that's worth less than $3k I said no way, especially giving Hyundai that much for parts. I bought these guys, a set of coils and spark plugs from Amazon, a heat gun, wire cutter, and electrical cloth tape for about $70. With the heat gun, they worked great. The solder doesn't melt quite how you'd expect, but it does turn into a softer blob and may leak slightly silver - takes a minute or two after you focus the heat there with a narrow nozzle. Make sure the wires are good and jammed or twisted in the middle of the sleeve! I made the mistake initially of not having them touching too well before using the connector and had to redo - luckily they come off fairly easily with heat and wire stripper if needed. All in all, very pleased and having zero issues so far! They shrunk well, connections are solid, and I know the wires will be better protected from humidity and heat.
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Reviewed in the United States on December 14, 2025 by Lyubomir N. Kolev II Lyubomir N. Kolev II
Number of Items: 120
Great for putting wires back together in my truck. Easy to use and holds great if you install them correctly. Nice storage included and the quality is good.
Reviewed in the United States on January 15, 2026 by Jacob knight
Number of Items: 200
Pretty good product, satisfied purchase for sure. I know it’s meant for a heat gun and to solder wires together, but I did neither and it still performs pretty well. I used it as substitution to a slide connector onto a speaker terminal and it works great.
Reviewed in the United States on January 5, 2026 by Tupou Tatofi Tupou Tatofi
Number of Items: 270
I have all manners of connectors and soldering stuff but these are the best and easiest way I've tried. Solder melts the wires together and the heat shrink seals it from the elements. These also take less space meaning cleaner installs. I won't have to buy any more for a while, but would absolutely buy these again when I run out.
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Reviewed in the United States on January 10, 2026 by J. Deines
Number of Items: 120
These connectors are GREAT! SO much better than the old crimp style connectors- Clean, easy and quick. Once you use these Heat Shrink/Solder connectors. you won't want to go back to old way! I went slow with the heat, and it took about 45 seconds to melt the solder and make a strong seal with the heat shrink. GET YOU SOME!!!
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Reviewed in the United States on December 27, 2025 by Lonnie00
Number of Items: 120
This is a must kit to have when dealing on spicy wiring together. This particular kid has a large range of sizes to accommodate wire sizes. Great value for the money. Everything works as advertised.
Reviewed in the United States on January 31, 2026 by Kelly Porter
Number of Items: 120
Worked well when new but after 6 months or so the solder on the remaining ones stopped melting at all. Ended up throwing more than half of them away because they simply stopped reacting to heat.
Reviewed in the United States on January 6, 2026 by J Lisle