---
product_id: 71352431
title: "120PCS Solder Seal Wire Connectors, Marine Grade Heat Shrink Butt Splice Connectors for Electrical, Stereo, Corrosion and Weatherproof"
brand: "haisstronica"
price: "A$29"
currency: AUD
in_stock: true
reviews_count: 13
category: "Haisstronica"
url: https://www.desertcart.com.au/products/71352431-120pcs-solder-seal-wire-connectors-marine-grade-heat-shrink-butt
store_origin: AU
region: Australia
---

# 120PCS multi-gauge connectors Marine-grade heat shrink seals Corrosion & weatherproof bond 120PCS Solder Seal Wire Connectors, Marine Grade Heat Shrink Butt Splice Connectors for Electrical, Stereo, Corrosion and Weatherproof

**Brand:** haisstronica
**Price:** A$29
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal the deal with confidence—connect like a pro, last like a legend!

## Quick Answers

- **What is this?** 120PCS Solder Seal Wire Connectors, Marine Grade Heat Shrink Butt Splice Connectors for Electrical, Stereo, Corrosion and Weatherproof by haisstronica
- **How much does it cost?** A$29 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/71352431-120pcs-solder-seal-wire-connectors-marine-grade-heat-shrink-butt)

## Best For

- haisstronica enthusiasts

## Why This Product

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

## Key Features

- • **Color-Coded for Speed:** Clearly marked wire gauges on tubing ensure quick, error-free connector selection.
- • **Marine-Grade Durability:** Copper contacts with polyolefin insulation resist corrosion and abrasion in harsh environments.
- • **Versatile 120-Piece Kit:** Includes multiple sizes to handle everything from stereo wiring to heavy-duty electrical splices.
- • **Instant Weatherproof Seal:** Hot melt adhesive activates on heat, creating a durable, waterproof bond in seconds.
- • **High-Temperature Resistance:** Rated up to 221°C, perfect for demanding electrical and marine applications.

## Overview

The haisstronica 120PCS Solder Seal Wire Connectors kit offers marine-grade, heat shrink butt splice connectors designed for fast, reliable, and corrosion-resistant electrical connections. Featuring hot melt adhesive that bonds instantly and color-coded tubing for easy gauge identification, this 120-piece set is engineered to withstand harsh environments and high temperatures up to 221°C, making it ideal for professional-grade electrical, stereo, and marine applications.

## Description

Buy haisstronica 120PCS Solder Seal Wire Connectors, Marine Grade Heat Shrink Butt Splice Connectors for Electrical, Stereo, Corrosion and Weatherproof: Butt - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Perfect for the job - My husband loves this kit! The connectors are easy to use, quality and a variety of sizes.
Review: Something so cheap, that works so good - Love these. Quick and easy, very strong connection.

## Features

- Haisstronica solder seal wire connectors hot melt adhesive systems provide the right amount of adhesive,which cools,hardens,and reaches its bond strength within seconds,ensuring a weatherproof and long-lasting bond for your application.
- With enough solder wrapping the wire to melt and flow,marine grade wire connectors forming a seal,which ensures long-lasting connections,especially for larger one.
- Specifically designed for use in harsh environments,the heat shrink creates cable entry seals,which offers environmental sealing protection and protects the wires and cables from abrasion,cutting,scuffing and low impact.
- One and Only:Uniquely marked with wire gauges on the polyolefin tubing,Haisstronica's butt connectors are designed for easy identification and quick selection of the appropriate connector.
- QUALITY COMMITMENT:We stand behind the quality of our products. If for any reason you are not satisfied with your purchase,please contact us.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07C3NBTJ9 |
| Best Sellers Rank | #1,532 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Butt Terminals #541 in Electrical Equipment |
| Brand | haisstronica |
| Color | White,Red,Blue,Yellow |
| Connector Type | Butt Splice |
| Contact Material | Copper |
| Date First Available | April 10, 2018 |
| Global Trade Identification Number | 00192687297658 |
| Insulation Material | Polyolefin |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.84 ounces |
| Item model number | HX1004 |
| Manufacturer | haisstronica |
| Material | Copper |
| Maximum Voltage | 24 Volts (DC) |
| Number of Items | 120 |
| Product Dimensions | 5.28"L x 4.02"W x 1.18"H |
| Temperature Rating | 221 degree celsius |
| Terminal | Butt Terminal |
| UPC | 192687297658 |
| Unit Count | 120 Count |

## Product Details

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

## Images

![120PCS Solder Seal Wire Connectors, Marine Grade Heat Shrink Butt Splice Connectors for Electrical, Stereo, Corrosion and Weatherproof - Image 1](https://m.media-amazon.com/images/I/810Hj2RK8uL.jpg)

## Available Options

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

## Questions & Answers

**Q: Do you crimp these or just twist the wires together and heat shrink them? if no crimping, how strong is it compared to crimping and heat shrinking?**
A: You will just need to twist the wires together and heat shrink them. Solder inside the connector will melt and bond the wires together. The connection is almost as strong as crimping and heat shrinking. When heat is applied, polyolefin tubing reduces in size and adhesive flows inside the insulation, creating a strong seal

**Q: wouldn't this result in a cold solder joint?   solder will melt before wire is up to temp?**
A: Not based on my experience...having taken a few apart after I've completed them, they appear to be a reasonably good connection. Also, they don't melt immediately so there is some heating of that termination. Apart from a good mechanical integrity (and since I'm also using these for electrical circuits), I made a comparison to mechanical lug/crimps by measuring the resistance across the connection on the same wires. The mechanical crimp/lug was 2.5mΩ and the solder was 980µΩ. I don't think it would've been that good on a cold solder joint, IMO. When I used solder flux on the wires and then used the solder, it decreased that number by nearly 100µΩ. So, I think it's good. I'm very happy with these...

**Q: Will these work for solid wire rather than stranded?**
A: I tried to use these when I put a brake controller on my SUV. I used UF underground solid wire ad it did not work too well. The heat shrink started to melt away before the solder would stick to the solid wire, it seemed to solder the stranded wire very nicely.   I soldered the wires together and then slid the heat shrink butt connector over it .Just as a side note, I bought the heat gun fro HF and it did the job.

**Q: I can't get the solder to melt before the heat shrink tubing starts to burn. i am using a wagner heat gun. am i doing something wrong?**
A: The heat gun you have sounds like a paint stripping heat gun. There is a heat gun available in harbor frieght that has 12 settings #'s 97114 or 69343 that is better suited for the task. Or you need to keep the heat gun further away and moving across the wires while you heat it.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect for the job
*by A***Y on January 12, 2026*

My husband loves this kit! The connectors are easy to use, quality and a variety of sizes.

### ⭐⭐⭐⭐⭐ Something so cheap, that works so good
*by S***N on January 9, 2026*

Love these. Quick and easy, very strong connection.

### ⭐⭐⭐⭐⭐ Better quality than other brands I have tried
*by R***. on February 20, 2026*

I have purchased different brands of this product and I will be purchasing this brand from now on. The solder melts and spreads before the heat shrink material splits and fails from to much heat. Although not recommended for use with a lighter I have found that this product is much more capable than others to use one effectively in the case where it is needed in the field with no electricity.

## Frequently Bought Together

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-10*