---
product_id: 45874242
title: "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"
brand: "kuject"
price: "15214CFA"
currency: XOF
in_stock: true
reviews_count: 8
category: "Kuject"
url: https://www.desertcart.sn/products/45874242-kuject-heat-shrink-solder-seal-wire-connectors-kit-120pcs-waterproof
store_origin: SN
region: Senegal
---

# Wide gauge range 26-10 AWG, 12V max IP67 waterproof with dual hot-melt adhesive rings Solderless & crimpless heat-activated seal 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

**Brand:** kuject
**Price:** 15214CFA
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal the deal with pro-grade, waterproof wiring magic!

## Quick Answers

- **What is this?** 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 by kuject
- **How much does it cost?** 15214CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/45874242-kuject-heat-shrink-solder-seal-wire-connectors-kit-120pcs-waterproof)

## Best For

- kuject enthusiasts

## Why This Product

- Trusted kuject brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-in-One 120PCS Kit:** Comprehensive gauge range and colors to keep your projects stocked and stylish.
- • **Certified Automotive Quality:** Meets IATF16949:2016 standards for reliable, professional-grade repairs.
- • **Marine-Grade Waterproof Seal:** Dual adhesive rings lock out moisture, perfect for boats, trucks, and outdoor gear.
- • **Flexible Fit for Tight Spaces:** Bendable connectors adapt to cramped spots without compromising integrity.
- • **Effortless Heat-Activated Connections:** Skip soldering and crimping—just a heat gun for flawless, fast wiring.

## Overview

The Kuject Heat Shrink Solder Seal Wire Connectors Kit offers 120 high-quality, waterproof butt connectors that create fast, reliable, and solderless electrical connections. Featuring dual hot-melt adhesive rings and polyolefin tubing, these connectors ensure a durable, moisture-resistant seal ideal for automotive, marine, and industrial applications. Certified to IATF16949:2016 standards and compatible with gauges 26-10 AWG, this kit simplifies wiring projects with a heat gun-only installation—no crimping or soldering needed.

## Description

Product description IP67 Waterproof After being heated, they shrink and water will not be able to go inside, preventing any short circuit issues. Widely used on boat, vehicle, motorcycle, home, factory or marine. High Success Rate Our wire connectors are upgraded to use exclusive material in the butt connectors to avoid shrink tubing melting before solder ring. The success rate of connecting wire has been greatly improved. Structure Features Polyolefin Tubing Outside and Hot melt Adhesive Inside make connection strong and waterproof. Note: We suggest the temperature that the hot air gun should set about:400-600℃ (752-1112°F) More Products 120pcs Wire Connectors Butt Connectors Heat Gun Wire Connectors 40pc Wire Connectors Lever Wire Connectors Kit Heat Shrink Connectors

Review: These Connectors Make Wiring a Breeze — Reliable and Easy! - 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.
Review: They worked as intended and where simple to use. - I used them on a wheelchair crane project, and they worked as advertised, they shrank formed a good bind and contact. For the price I cannot complain.

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B073RMRCC3 |
| Best Sellers Rank | #423 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Butt Terminals |
| Brand Name | Kuject |
| Color | RED BLUE YELLOW WHITE |
| Connector Type | Butt Splice |
| Contact Material | Phosphor Bronze |
| Customer Reviews | 4.5 out of 5 stars 44,109 Reviews |
| Gauge | 10,12,14,16,18,20,22,24,26 |
| Insulation Material | Polyethylene |
| Insulation Material Type | Polyethylene |
| Item Dimensions L x W x H | 8.07"L x 4.33"W x 0.71"H |
| Item Weight | 0.24 Pounds |
| Manufacturer | Kuject |
| Material | PE,Tin |
| Material Type | PE,Tin |
| Maximum Voltage | 12 Volts (DC) |
| Model | SS120 |
| Specification Met | Iso 9001:2008, Sgs and Ce Standards |
| Stud Size | 26 - 10 A.W.G. |
| Temperature Rating | Work Temp: -67℉ - 257 ℉ |
| Terminal | Butt Terminal |
| Unit Count | 1 Count |
| Warranty Description | 90-day warranty from date of purchase |

## Product Details

- **Color:** RED BLUE YELLOW WHITE
- **Connector Type:** Butt Splice
- **Contact Material:** Phosphor Bronze
- **Insulation Material:** Polyethylene
- **Terminal:** Butt Terminal

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/91RK1o2NnlL.jpg)

## Available Options

This product comes in different **Number Of Items** options.

## Questions & Answers

**Q: are wire connectors the same thing as butt connectors?**
A: Dear Customer, 
These are solder seal wire connectors, rather than butt connectors. This is the heat shrink butt connector here: https://www.amazon.com/dp/B07B518GCJ. You can check they are difference via the link above.

For let you know their difference eaiser, we compare these two kinds of connectors from 4 aspects as follow: 

1. Simplicity of Operation. For joining the wire with heat shirnk butts, you need a heat gun and plier, but for the solder seal coneecotrs, you just need a heat gun, as there is no need to crimp. So, the solder seal connector will be easier to use. 
2. Waterproof Resistance. Both of them are waterproof, but there are two hot melt waterproof adhesive rings in the solder seal connectors, which will make it get a better waterproof and seal performance. 
3. Flexibility of Use in The Confined Space. The solder seal connectors can be bent after connection and just need a heat gun to control the temperature to finish the joint, so it is more flexable and eaier when joining wire in the confined space. 
4. Price. On Kuject, 210Pcs heat shrink butts is $19.99 ($1 for 10 piece) , and 120Pcs solder seal wire connectors is $16.99($1.42 for 10 piece) . The price is cheaper for every piece of the heat shrink butt connectors. 

In conclusion,  the solder seal connectors have a better performance than the heat shrink butts although it is a little expensive. So, we will recommend to use the solder seal connectors in most case, but it still depend on your needs. 

Besides, there are two kinds of butt connectors in the market: crimp butt connector & heat shrink butt connector. Maybe you refer to the crimp butts, so we also talk about the crimp butt connector here. The appearance of crimp butt is almost same as the heat shrink butt, but the tube outside of crimp butt connector is made by nylon, so they can not be heat shrinked and not waterproof, which can not be used outdoor or humid area, just only can use indoor and dry space. 

These are the introduction of the three type of connectors above, hope our answer help you.

Best wishes, 
Kuject customer serivce team

**Q: Photo w/ all the connectors lying outside the box shows about 25 of 12/10 connectors but the box/label shows only 10 are provided - which is correct?**
A: There are only 10, the first photo of 25 is dishonest.

**Q: Are these connectors UL listed?**
A: What is UL certified mean?-UL Certified. A certificate, issued to a manufacturer for one of its products, which indicates that the product has been tested in the US by the Underwriters Laboratories, Inc. (UL) and has met UL requirements.

What you should know about UL certification?-UL Certification means that a product has undergone rigorous testing to ensure its safety standards are up-to-date. UL provides a number of services for a business—including validating, testing, inspecting, auditing, and certifying products and various businesses around the world.

What is the cost to be UL Certified?-The fee, paid to UL, is often in the range between US$5,000 to 15,000. Then again, this is for he services provided by UL, and not including product development costs.
China Imports -UL (Underwriter Laboratories) develops electronics safety standards for the United States, and provide related testing, certification and auditing services.- Unlike the EU, where importers must comply with a set of harmonized electronics safety standards – American electronics importers are free to choose which standards to comply with.-UL standards are developed for specific electronic products, or components, such as cords, batteries and plugs.

**Q: I need to join wires when installing the new radio for my car, is it safe and reliable for using these kind of self-solder wire connectors?**
A: Dear Customer,

Our item is IATF16949:2016 Listed, this is a certification of International Automotive Task Force. Automobile company like Ford, General Motors and Chrysler Corporation require that only product which go through the certification IATF16949:2016 can be used as parts to repair their cars, so you can use our connectors at ease.

Besides, compare to the tradition method that wiring with the solder iron, using our self-solder wire connectors will be much faster and easier, all you need is just a heat gun to heat the connectors.

Best wishes,
Kuject customer service team

## Customer Reviews

### ⭐⭐⭐⭐⭐ These Connectors Make Wiring a Breeze — Reliable and Easy!
*by B***. on June 25, 2025*

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.

### ⭐⭐⭐⭐⭐ They worked as intended and where simple to use.
*by P***K on February 4, 2026*

I used them on a wheelchair crane project, and they worked as advertised, they shrank formed a good bind and contact. For the price I cannot complain.

### ⭐⭐⭐⭐ Great for putting 2 wires together.
*by J***T on January 15, 2026*

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.

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-03-05*