---
product_id: 149432174
title: "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: "122 Lei"
currency: RON
in_stock: true
reviews_count: 13
category: "Kuject"
url: https://www.desertcart.ro/products/149432174-120pcs-solder-seal-wire-connectors-waterproof-heat-shrink-solder-sleeve
store_origin: RO
region: Romania
---

# IP67 waterproof seal Heat resistant up to 138°C 3x faster solderless connection 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:** 122 Lei
**Availability:** ✅ In Stock

## Summary

> 🔥 Connect smarter, not harder — the future of wiring is here!

## Quick Answers

- **What is this?** 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?** 122 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/149432174-120pcs-solder-seal-wire-connectors-waterproof-heat-shrink-solder-sleeve)

## 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

- • **Complete Color-Coded Kit:** 120 pieces in 4 sizes for every wire gauge, ready to tackle any project.
- • **Effortless Heat-Gun Activation:** Skip soldering and crimping—just apply heat and seal in seconds.
- • **Unmatched Waterproof Reliability:** Dual hot-melt adhesive rings ensure moisture-proof, long-lasting joints.
- • **Automotive-Grade Quality Assurance:** IATF16949:2016 certified for professional-grade car repairs and modifications.
- • **Compact Flexibility for Tight Spaces:** Bendable connectors designed for confined wiring without hassle.

## Overview

The Kuject 120PCS Wire Connectors kit offers a professional-grade, solderless solution for fast, reliable wire connections. Featuring heat-activated sealing with dual waterproof adhesive rings, these connectors withstand high temperatures up to 138°C and meet the rigorous IATF16949:2016 automotive standard. Perfect for confined spaces, the kit includes 4 color-coded sizes covering a wide range of wire gauges, making it an essential upgrade for efficient, durable electrical repairs and modifications.

## 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: Brilliant bit of kit, a must to have. - Fantastic item. Worked a charm Tips. Slide the narrower end on first wind together, small dab of flux to help a good solder, slide back over, centralise, heat solder till it flows into wires then seal left and right, allow to cool without touching ... Perfect 👌👍

## 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 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 235 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 1 in Butt Terminals |
| Colour | RED BLUE YELLOW WHITE |
| Customer Reviews | 4.6 4.6 out of 5 stars (43,708) |
| Date First Available | 6 July 2017 |
| Item Package Quantity | 1 |
| Item Weight | 109 g |
| Item model number | SS120 |
| Manufacturer | Kuject |
| Material | Tin, Polymer |
| Measurement System | English/Standard |
| Part number | SS120 |
| Product Dimensions | 20 x 10 x 1.7 cm; 108.86 g |
| Shape | Tubular |
| Size | 120PCS |
| Specification met | IATF16949:2016 |
| Style | SS120 |

## Product Details

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

## Images

![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)

## 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

### ⭐⭐⭐⭐⭐ Brilliant bit of kit, a must to have.
*by S***Y on 17 January 2026*

Fantastic item. Worked a charm Tips. Slide the narrower end on first wind together, small dab of flux to help a good solder, slide back over, centralise, heat solder till it flows into wires then seal left and right, allow to cool without touching ... Perfect 👌👍

### ⭐⭐⭐⭐ Easy and effective.
*by M***O on 4 June 2025*

Not sure if it's the solder or the heat shrink that's holding the wires tightest but it's effective and makes joining wires simple. Solder in it has quite a low melting point so takes a bit longer than you might expect to harden again (give it a minute). I tried bodging 4 wires in one connector and it's still holding them solid. Personally I wouldn't trust it completely to insulate the wires, I think I'd put another heat shrink sleeve over the top because I'm not certain the solder part won't melt through and it'd be difficult to spot.

## 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 Romania*
*Store origin: RO*
*Last updated: 2026-01-28*