---
product_id: 149432174
title: "Kuject 120PCS Solder Seal Wire Connectors, Waterproof Heat Shrink Solder Sleeve Self-Solder Insulated Electrical Butt Splice Wire Terminals for Marine Automotive Boat Truck Wire Joint"
brand: "kuject"
price: "4617 kr"
currency: ISK
in_stock: true
reviews_count: 8
category: "Kuject"
url: https://www.desertcart.is/products/149432174-kuject-120pcs-solder-seal-wire-connectors-waterproof-heat-shrink-solder
store_origin: IS
region: Iceland
---

# Supports 12V DC, high-temp resistant Dual hot-melt adhesive waterproof seal Self-soldering heat-activated ring Kuject 120PCS Solder Seal Wire Connectors, Waterproof Heat Shrink Solder Sleeve Self-Solder Insulated Electrical Butt Splice Wire Terminals for Marine Automotive Boat Truck Wire Joint

**Brand:** kuject
**Price:** 4617 kr
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal the deal with every connection — waterproof, effortless, and built to last!

## Quick Answers

- **What is this?** Kuject 120PCS Solder Seal Wire Connectors, Waterproof Heat Shrink Solder Sleeve Self-Solder Insulated Electrical Butt Splice Wire Terminals for Marine Automotive Boat Truck Wire Joint by kuject
- **How much does it cost?** 4617 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/149432174-kuject-120pcs-solder-seal-wire-connectors-waterproof-heat-shrink-solder)

## 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

- • **Compact & Flexible Fit:** Bends easily to fit tight spaces without compromising connection integrity.
- • **All-in-One Size Assortment:** 120 connectors in 4 color-coded sizes cover a wide range of wire gauges for any project.
- • **Certified Automotive Standard:** Meets IATF16949:2016 for trusted, industry-grade wire repairs and modifications.
- • **Ultimate Waterproof Reliability:** Dual adhesive rings lock out moisture, perfect for marine and automotive environments.
- • **Effortless Pro-Grade Connections:** No soldering or crimping—just heat and go for flawless joints every time.

## Overview

Kuject 120PCS Solder Seal Wire Connectors combine heat-activated self-soldering rings with dual waterproof adhesive seals to deliver fast, reliable, and durable wire splicing. Certified to automotive standards (IATF16949:2016), these connectors support 12V DC circuits and withstand temperatures from -67℉ to 257℉. Their flexible, compact design fits confined spaces without crimping, making them ideal for marine, automotive, boat, and truck wiring projects.

## Description

Product Description WHY CHOOSING OUR STORE - For Kuject, quality is at the top of our selection criteria list. Quality has, and always will be, our core focus. Our heat shrink connectors are compliant with ISO 9001:2008, ROHS, SGS and CE standard. - Due to the nature of the products we sell, getting them to you quickly and efficiently is a key priority for our customers. That’s why we dispatch all our product by desertcart Fulfillment. - We continue to expand product range suitable for a wide variety of applications according to customer needs. We believe our products could meet the most needs for wire connection. IP67 Waterproof 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. Shrinkage ratio is 3:1 Temperature that start to shrink: 80℃ Temperature that solder ring start to melt: 111˚C Temperature that solder ring melt completely：138˚C Note: We suggest the temperature that the hot air gun should set about:400-600℃ (752-1112°F) Package Include 1.30 x White Connectors: Diameter 1.7 mm, able cross-section 0.25-0.34 mm² (A.W.G.:26-24); 2.40 x Red Connectors: Diameter 2.7 mm, Cable cross-section 0.5-1.0 mm² (A.W.G.:22-18); 3.40 x Blue Connectors: Diameter 4.5 mm, Cable cross-section 1.5-2.5 mm²(A.W.G.:16-14); 4.10 x Yellow Connectors: Diameter 6.0 mm, Cable cross-section 4.0-6.0 mm²(A.W.G.:12-10).

Review: Nice - Nice product. Makes the wiring eaier so no need to solder them this doea it for you. Easy to use with heat gun
Review: Product Review: Kuject 50PCS Solder Seal Wire Connectors - The Kuject 50PCS Solder Seal Wire Connectors have been a game-changer for my electrical projects. These waterproof heat shrink butt connectors are incredibly easy to use and provide a secure and reliable connection for marine, automotive, boat, and truck wire joints. The self-solder feature is a game-changer, eliminating the need for an extra soldering tool. All I need to do is insert the wires, apply heat, and watch the magic happen. The solder sleeve ensures a solid bond, leaving no room for error. I appreciate the extra peace of mind these connectors offer with their waterproof properties, making them ideal for use in various weather conditions and environments. The 50PCS assortment provides a good range of sizes, giving me options for different wire gauges and joint sizes. Overall, the Kuject Solder Seal Wire Connectors have made my electrical work much more efficient and reliable. I highly recommend these connectors to anyone looking for a hassle-free and effective solution for wire splicing and connections.

## 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.
- Better 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 | 256 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 1 in Butt Terminals |
| Brand | Kuject |
| Colour | RED BLUE YELLOW WHITE |
| Connector Type | Butt Splice |
| Connector type | Butt Splice |
| Contact Material | Phosphor Bronze |
| Contact material | Phosphor Bronze |
| Country Of Origin | China |
| Customer Reviews | 4.6 out of 5 stars 43,613 Reviews |
| Insulation Material Type | Polyethylene |
| Insulation material | Polyethylene |
| Item Dimensions L x W x H | 20L x 10W x 1.7H centimetres |
| Item Weight | 109 g |
| Item height | 1.7 centimetres |
| Manufacturer | Kuject |
| Material | Tin , Polymer |
| Maximum Voltage | 12 Volts (DC) |
| Model Number | SS120 |
| Specification Met | IATF16949:2016 |
| Stud Size | 6 month |
| Temperature Rating | Work Temp: -67℉ - 257 ℉ |
| Terminal | Butt Terminal |
| Unit Count | 1.0 Count |

## Product Details

- **Colour:** RED BLUE YELLOW WHITE
- **Connector type:** Butt Splice
- **Contact material:** Phosphor Bronze
- **Insulation material:** Polyethylene
- **Terminal:** Butt Terminal

## Images

![Kuject 120PCS Solder Seal Wire Connectors, Waterproof Heat Shrink Solder Sleeve Self-Solder Insulated Electrical Butt Splice Wire Terminals for Marine Automotive Boat Truck Wire Joint - Image 1](https://m.media-amazon.com/images/I/91RK1o2NnlL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Can I use hair dryer instead heat gun?**
A: The heat gun takes awhile to melt it so wouldn’t use a hairdryer I’m guessing if it did work you would be there for ages.

**Q: Hi. Does it need to be used with other tools?**
A: Yes, you need to purchase preferably a heat gun. The heat gun is used to mould the connector around the 2 broken wires securely so that they connect as 1.

**Q: What’s it up rating?**
A: I find these very useful indeed. They give a prefect connection, which is waterproof. (Although I always use heat shrink tubing over the connections to make certain they are totally sturdy and waterproof.)

**Q: is this suitable to reconnect a cut off hedge cutter cable (240v 5a). Also I just have a wind proof lighter is that ok and will the flame not burn it?**
A: Good for fixing wires together. I just use enough hat air till the solder melts and plastic tightens. Gentle heat. I use a heat gun  that straps paint.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice
*by D***S on 17 December 2025*

Nice product. Makes the wiring eaier so no need to solder them this doea it for you. Easy to use with heat gun

### ⭐⭐⭐⭐⭐ Product Review: Kuject 50PCS Solder Seal Wire Connectors
*by A***R on 1 August 2023*

The Kuject 50PCS Solder Seal Wire Connectors have been a game-changer for my electrical projects. These waterproof heat shrink butt connectors are incredibly easy to use and provide a secure and reliable connection for marine, automotive, boat, and truck wire joints. The self-solder feature is a game-changer, eliminating the need for an extra soldering tool. All I need to do is insert the wires, apply heat, and watch the magic happen. The solder sleeve ensures a solid bond, leaving no room for error. I appreciate the extra peace of mind these connectors offer with their waterproof properties, making them ideal for use in various weather conditions and environments. The 50PCS assortment provides a good range of sizes, giving me options for different wire gauges and joint sizes. Overall, the Kuject Solder Seal Wire Connectors have made my electrical work much more efficient and reliable. I highly recommend these connectors to anyone looking for a hassle-free and effective solution for wire splicing and connections.

### ⭐⭐⭐⭐ Good if your mainly using the white and red ones
*by D***H on 17 December 2025*

Great cheap way to connect 2 wires without knowing how to solder. White and red ones are very good, definitely recommend getting a cheap heat gun to get a solid waterproof connection and let the solder flow all the way through the wires. Only issue is the blue and yellow ones are so big my heat gun couldn’t melt the solder correctly so the connections weren’t solid.

## Frequently Bought Together

- 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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- Eventronic 400 Pcs Heat Shrink Tubing Kit-3:1 Ratio Adhesive Lined,Marine Grade Shrink Wrap - Industrial Heat-Shrink Tubing - Black

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-01-25*