---
product_id: 91863869
title: "140PCS Solder Seal Wire Connectors, Electrical Heat Shrink Butt Connectors"
brand: "sopoby"
price: "$32.58"
currency: USD
in_stock: true
reviews_count: 13
category: "Sopoby"
url: https://www.desertcart.us/products/91863869-140pcs-solder-seal-wire-connectors-electrical-heat-shrink-butt-connectors
store_origin: US
region: United States of America
---

# Double-wall waterproof seal Heat-activated solder melt Abrasion-resistant polyolefin tubing 140PCS Solder Seal Wire Connectors, Electrical Heat Shrink Butt Connectors

**Brand:** sopoby
**Price:** $32.58
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal it. Shrink it. Forget it. The ultimate solder seal connectors for pros who demand flawless wiring.

## Quick Answers

- **What is this?** 140PCS Solder Seal Wire Connectors, Electrical Heat Shrink Butt Connectors by sopoby
- **How much does it cost?** $32.58 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/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

- • **One-Step Heat Activation:** Simplify your wiring with solder that melts and seals in one go—no extra steps, no mess.
- • **Optimized Electrical Flow:** Tin-plated copper barrels reduce voltage drop and ensure stable current, minimizing downtime and failures.
- • **Ultimate Waterproof Protection:** Double-wall design with hot melt adhesive locks out moisture and prevents wire slippage for rugged reliability.
- • **Built to Endure Harsh Conditions:** Abrasion-resistant tubing shields your connections from cuts, scuffs, and impacts—perfect for outdoor and marine use.
- • **Versatile & Ready for Any Project:** From motorcycles to Christmas lights, this 140-piece kit covers AWG 26-10 wires with professional-grade durability.

## Overview

The Sopoby 140PCS Solder Seal Wire Connectors combine heat-activated solder and double-wall waterproof tubing to create durable, abrasion-resistant, and electrically efficient wire splices. Designed for AWG 26-10 wires, these connectors simplify complex wiring tasks with a one-step heat shrink and solder process, ideal for automotive, marine, and home electrical 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: Really neat product, worked great - I read a bunch of the reviews and took a chance that this lived up to the hype and it really does. It was super easy to join all the wires in the cable harness that I was working with. I was easily able to push the one wire through and then the other from the other side, have them mingle in the center and then hold it over my upright heat gun and just watch the heat shrink tubing and then the solder seal up the joint. It was beautiful and made a strong and water tight seal (not that water tight was really anything I needed to worry about), just like a regular soldered joint and heat shrink, but without a two step process. The only thing I needed to be careful of is that the whole thing is still a bit gooey when you take it away from the heat gun, so letting it cool a few seconds before applying any accidental lateral pressure kept from making a mess. Connected about 30 pairs of wires in about 30 minutes without having my hand hurting from crimping connectors over and over again. Love this, would totally order it again, and as some others mentioned, the box was surprising small and compact. Really great, highly recommend, but you definitely want to have a heat gun.
Review: Excellent quality splices that have worked perfectly every time. Fast, easy and safe method of splicing all types of wireing. - Great quality and nice variety of sizes. I bought these to have them on hand for when I need them which when you are living and travelling full time in a 5th wheel is pretty much anytime something stops working it seems everything is somehow tied to electrical in one of these and because it's like a earthquake in the trailer every time you move it things break and come loose fairly often. I've used several of these already and love having them onboard because every time I've used one the outcome has been perfect the melt exactly like they should using my 1500 watt hot air gun all you have to do is strip and short piece of each wire end your using first insert one wire end into the splice and melt the splice onto the wire, insert the other wire end into the open end of the splice and again melt the splice with a hot air gun or other heat source the metal center of the splice will complete the circuit making the wire whole again that's it it's not hard at all. I've had great success with these in the trailer and in my pickup I use to tow the 5th wheel I don't see running out of these anytime soon but when and if I do I will be buying more just like these from this seller.

## 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 | #21,599 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #140 in Butt Terminals #18,887 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 8,248 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 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

### ⭐⭐⭐⭐⭐ Really neat product, worked great
*by J***F on February 6, 2019*

I read a bunch of the reviews and took a chance that this lived up to the hype and it really does. It was super easy to join all the wires in the cable harness that I was working with. I was easily able to push the one wire through and then the other from the other side, have them mingle in the center and then hold it over my upright heat gun and just watch the heat shrink tubing and then the solder seal up the joint. It was beautiful and made a strong and water tight seal (not that water tight was really anything I needed to worry about), just like a regular soldered joint and heat shrink, but without a two step process. The only thing I needed to be careful of is that the whole thing is still a bit gooey when you take it away from the heat gun, so letting it cool a few seconds before applying any accidental lateral pressure kept from making a mess. Connected about 30 pairs of wires in about 30 minutes without having my hand hurting from crimping connectors over and over again. Love this, would totally order it again, and as some others mentioned, the box was surprising small and compact. Really great, highly recommend, but you definitely want to have a heat gun.

### ⭐⭐⭐⭐⭐ Excellent quality splices that have worked perfectly every time. Fast, easy and safe method of splicing all types of wireing.
*by I***S on February 16, 2018*

Great quality and nice variety of sizes. I bought these to have them on hand for when I need them which when you are living and travelling full time in a 5th wheel is pretty much anytime something stops working it seems everything is somehow tied to electrical in one of these and because it's like a earthquake in the trailer every time you move it things break and come loose fairly often. I've used several of these already and love having them onboard because every time I've used one the outcome has been perfect the melt exactly like they should using my 1500 watt hot air gun all you have to do is strip and short piece of each wire end your using first insert one wire end into the splice and melt the splice onto the wire, insert the other wire end into the open end of the splice and again melt the splice with a hot air gun or other heat source the metal center of the splice will complete the circuit making the wire whole again that's it it's not hard at all. I've had great success with these in the trailer and in my pickup I use to tow the 5th wheel I don't see running out of these anytime soon but when and if I do I will be buying more just like these from this seller.

### ⭐⭐⭐⭐ 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 United States of America*
*Store origin: US*
*Last updated: 2026-08-15*