---
product_id: 91863869
title: "140PCS Solder Seal Wire Connectors, Electrical Heat Shrink Butt Connectors"
brand: "sopoby"
price: "R643"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Sopoby"
url: https://www.desertcart.co.za/products/91863869-140pcs-solder-seal-wire-connectors-electrical-heat-shrink-butt-connectors
store_origin: ZA
region: South Africa
---

# Double-wall waterproof seal 138°C solder melt temp Abrasion-resistant polyolefin 140PCS Solder Seal Wire Connectors, Electrical Heat Shrink Butt Connectors

**Brand:** sopoby
**Price:** R643
**Availability:** ✅ In Stock

## Summary

> ⚡ Seal the deal with every splice — waterproof, durable, and ready to perform!

## Quick Answers

- **What is this?** 140PCS Solder Seal Wire Connectors, Electrical Heat Shrink Butt Connectors by sopoby
- **How much does it cost?** R643 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/91863869-140pcs-solder-seal-wire-connectors-electrical-heat-shrink-butt-connectors)

## Best For

- sopoby enthusiasts

## Why This Product

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

## Key Features

- • **Optimized Electrical Flow:** Tin-plated copper barrels reduce voltage drop and minimize downtime on critical gear.
- • **Rugged Abrasion Resistance:** Durable heat-shrink tubing shields wires from cuts, scuffs, and harsh environments.
- • **Versatile Multi-Project Kit:** 140 connectors cover everything from marine electronics to motorcycle repairs and holiday lighting.
- • **Instant Pro-Grade Connections:** Solder melts at 138°C for seamless, permanent joins without bulky crimps.
- • **Waterproof Double-Wall Design:** Hot melt adhesive inside plus polyolefin tubing locks out moisture and prevents wire slippage.

## Overview

The Sopoby 140PCS Solder Seal Wire Connectors kit features heat-shrink tubing with embedded solder and hot melt adhesive, enabling quick, waterproof, and abrasion-resistant electrical connections. Rated for 24V DC and up to 257°F, these connectors ensure reliable conductivity and mechanical strength across automotive, marine, and home wiring projects.

## Description

Buy 140PCS Solder Seal Wire Connectors, Electrical Heat Shrink Butt Connectors | Insulated Waterproof Solder Terminal Kit Marine Automotive Home Wiring: Butt - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: SUPER Convenient to use for quick in-field repairs - *EDIT 5/1/2020* So I'm positive these are the best things in the world. I've finally exhausted the majority of the 50 pack and just gladly ordered the 280 and can say that 20-25 for these things is a great deal for how effective these are. For super permanent or less space-starved fixes I still prefer to sit down and solder/wrap normally (like wiring a car stereo) but for just about anything else, even stuff you might come back to, these are a game-changer. You can hold more heat shrink onto the back of the wires since it takes way less heat through the wire to secure these than actual solder where the wire itself can get pretty hot, especially larger more conductive wires that might start closing the heat shrink down the wire prematurely while securing the joint. This actually saved my butt when my headlight wire got caught leaving work (I get off after dark). I had thrown a few in my backpack "just in case" and it actually came up. These are super convenient and get the job done. They're actually pretty solid, too, and feel relatively trustworthy. I like these better than the hard, plastic crimps that don't shrink down, obv, but I mean these things are definitely more solid, and I feel like I've gotten those things tight. For anything worth anything that needs to be permanent, you want to splice, solder, and heat shrink. But when that isn't an option anytime soon, these are by far the most clutch tool to have in your electrical toolbox.
Review: Nice connectors, but have to be done right to make them work - I like these connectors so far. It takes just the right type of procedure to get them to work. What I have done is to strip (proper size wire) the wires about 1/12 inch and insert the wires from both ends until the wires touch the insulation on each other leaving them bare wires exactly in the middle. Twisting for me did 2 things I didn't like. In most instances, it made making close connections very hard to do, and the other thing is that twisting the wires also most time made the wires bundled that way a bit too large to safely and easily pull the connector over them. letting the wires either naturally slide past each other or into each other made for the best results. The next thing that is required is to get a good quality heat gun and hold it about1.5 to 2 inches ways and heat while moving it back and forth. Heat from at least 2 different angles and the solder will melt properly, the sealer will spread out and the casing will shrink properly and provide a hold that is very difficult to pull apart. I used probably close to 50 lbs. of force and could not pull wires apart. Let the connections cool a bit before moving them around. If you have more force than 50lbs on your wires you need to do something to relieve that stress. These are not for every type of connection or for every place a connection is needed, but given the proper space and type of wire, these work far more effectively than I expected them to.

## Features

- PREMIUM SOLDER SEAL RING: Tubing reduces in size, the enough solder will melt and flow through the stripped wires, ensure a long lasting connection for your application
- BETTER WATERPROOF SOLUTIONS: Double wall design, Hot Melt Adhesive inside ensures wires strongly connected and prevent wires slipping from the terminal; Polyolefin outside tubing provides insulation and improves pullout strength
- ABRASION RESISTANCE HEAT SHRINKABLE TUBE: Premium tube materials are specially designed to be used in harsh environments. Protect the wires and cables from abrasion, cutting, scuffing and low impact situations
- EXCELLENT WIRE CONTACT - The tin barrel provides increased current flow, and ensures less voltage drop, preventing wiring failures and reducing equipment downtime
- WIDE APPLICATIONS: Excellent stability, water resistance and electrical conductivity provide durable connection for motorcycle, off-road vehicles, lawn tractors, RVs, fish finder and marine application. Widely used on multiple projects of your Christmas lights, ships with high waterproof requirements motorcycle stereo, boat electronics, equipment switches

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07JJ6YYKL |
| Best Sellers Rank | #37,668 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #223 in Butt Terminals #14,200 in Electrical Equipment |
| Brand Name | Sopoby |
| Color | Yellow, Blue, Red, White |
| Connector Gender | Male |
| Connector Type | Solder |
| Contact Material | Copper |
| Customer Reviews | 4.6 out of 5 stars 8,251 Reviews |
| Gauge | AWG 26-10 |
| Included Components | 1 |
| Insulation Material | Polyolefin |
| Insulation Material Type | Polyolefin |
| Item Dimensions L x W x H | 4.72"L x 2.36"W x 0.5"H |
| Item Highlight | Insulated Waterproof Solder Terminal Kit Marine Automotive Home Wiring |
| Item Type Name | 140 PCS Solder Seal Wire Connectors - Sopoby Heat Shrink Solder Connectors - Electrical Solder Butt Connectors - Insulated Waterproof Solder Connector Terminal Kit Marine Automotive Home Wiring |
| Manufacturer | Sopoby |
| Material | Polyolefin Tubing with Hot Melt Adhesive & Solder inside |
| Material Type | Polyolefin Tubing with Hot Melt Adhesive & Solder inside |
| Maximum Voltage | 24 volts_of_direct_current |
| Model | Sopoby Solder Wire Connectors |
| Number of Items | 140 |
| Part Number | Sopoby291 |
| Specification Met | ① Minimum Shrink Temperature: 80℃, ② Minimum Temperature for Solder to Melt: 138℃ |
| Temperature Rating | 257 degree fahrenheit |
| Terminal | Butt Terminal |
| UPC | 674862395026 |
| Unit Count | 1 Count |

## Product Details

- **Color:** Yellow, Blue, Red, White
- **Connector Type:** Solder
- **Contact Material:** Copper
- **Insulation Material:** Polyolefin
- **Terminal:** Butt Terminal

## Images

![140PCS Solder Seal Wire Connectors, Electrical Heat Shrink Butt Connectors - Image 1](https://m.media-amazon.com/images/I/71wyoCN73aL.jpg)
![140PCS Solder Seal Wire Connectors, Electrical Heat Shrink Butt Connectors - Image 2](https://m.media-amazon.com/images/I/71anXGa4GqL.jpg)
![140PCS Solder Seal Wire Connectors, Electrical Heat Shrink Butt Connectors - Image 3](https://m.media-amazon.com/images/I/71GIoOMvWkL.jpg)
![140PCS Solder Seal Wire Connectors, Electrical Heat Shrink Butt Connectors - Image 4](https://m.media-amazon.com/images/I/71S1pw-7+CL.jpg)
![140PCS Solder Seal Wire Connectors, Electrical Heat Shrink Butt Connectors - Image 5](https://m.media-amazon.com/images/I/71HrBwG0fjL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ SUPER Convenient to use for quick in-field repairs
*by S***E on February 29, 2020*

*EDIT 5/1/2020* So I'm positive these are the best things in the world. I've finally exhausted the majority of the 50 pack and just gladly ordered the 280 and can say that 20-25 for these things is a great deal for how effective these are. For super permanent or less space-starved fixes I still prefer to sit down and solder/wrap normally (like wiring a car stereo) but for just about anything else, even stuff you might come back to, these are a game-changer. You can hold more heat shrink onto the back of the wires since it takes way less heat through the wire to secure these than actual solder where the wire itself can get pretty hot, especially larger more conductive wires that might start closing the heat shrink down the wire prematurely while securing the joint. This actually saved my butt when my headlight wire got caught leaving work (I get off after dark). I had thrown a few in my backpack "just in case" and it actually came up. These are super convenient and get the job done. They're actually pretty solid, too, and feel relatively trustworthy. I like these better than the hard, plastic crimps that don't shrink down, obv, but I mean these things are definitely more solid, and I feel like I've gotten those things tight. For anything worth anything that needs to be permanent, you want to splice, solder, and heat shrink. But when that isn't an option anytime soon, these are by far the most clutch tool to have in your electrical toolbox.

### ⭐⭐⭐⭐⭐ Nice connectors, but have to be done right to make them work
*by S***E on November 11, 2022*

I like these connectors so far. It takes just the right type of procedure to get them to work. What I have done is to strip (proper size wire) the wires about 1/12 inch and insert the wires from both ends until the wires touch the insulation on each other leaving them bare wires exactly in the middle. Twisting for me did 2 things I didn't like. In most instances, it made making close connections very hard to do, and the other thing is that twisting the wires also most time made the wires bundled that way a bit too large to safely and easily pull the connector over them. letting the wires either naturally slide past each other or into each other made for the best results. The next thing that is required is to get a good quality heat gun and hold it about1.5 to 2 inches ways and heat while moving it back and forth. Heat from at least 2 different angles and the solder will melt properly, the sealer will spread out and the casing will shrink properly and provide a hold that is very difficult to pull apart. I used probably close to 50 lbs. of force and could not pull wires apart. Let the connections cool a bit before moving them around. If you have more force than 50lbs on your wires you need to do something to relieve that stress. These are not for every type of connection or for every place a connection is needed, but given the proper space and type of wire, these work far more effectively than I expected them to.

### ⭐⭐⭐⭐ Works but...
*by B***N on August 18, 2021*

As an Engineer I found this to be a great idea so I tested it out on a piece of wire which I stripped and twisted together. I slid one of the red shrink sleeves over the joint then used a lighter, and after a few seconds of moving the flame back and forth, the solder seemed to melt and it looked to be a good connection. Then I tried pulling it apart and the connection failed. I then tried again, but this time I dipped the stripped ends of the wire in Flux which is a very necessary part of the soldering process. Not only did the joint work perfectly after using the flux, it also heated up much faster, reducing the chance of melting the plastic. Without the flux you can get what is called a "cold" joint where the solder melts but doesn't really flow onto the wire. I don't know if the average person has flux laying around but it would be great if they included a small tube in the kit. Or better yet, figure out a way to line the inner part of the shrink tube on either side of the solder, so it gets applied to the wire when things heat up. Great idea and works in a pinch when you don't have electricity for a soldering iron - just needs flux!

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-09-17*