---
product_id: 506058335
title: "Wirefy 3/4\" Heat Shrink Tubing - Large Diameter - 3:1 Ratio - Adhesive Lined - Industrial Heat-Shrink Tubing - Red - 50 Feet Roll"
brand: "wirefy"
price: "€ 152.87"
currency: EUR
in_stock: true
reviews_count: 13
category: "Wirefy"
url: https://www.desertcart.fi/products/506058335-wirefy-3-4-heat-shrink-tubing-large-diameter-3-1
store_origin: FI
region: Finland
---

# Adhesive-lined waterproof bond 3:1 shrink ratio for tight seal Dual-wall marine-grade durability Wirefy 3/4" Heat Shrink Tubing - Large Diameter - 3:1 Ratio - Adhesive Lined - Industrial Heat-Shrink Tubing - Red - 50 Feet Roll

**Brand:** wirefy
**Price:** € 152.87
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal it. Shield it. Own it. Professional-grade heat shrink tubing that means business.

## Quick Answers

- **What is this?** Wirefy 3/4" Heat Shrink Tubing - Large Diameter - 3:1 Ratio - Adhesive Lined - Industrial Heat-Shrink Tubing - Red - 50 Feet Roll by wirefy
- **How much does it cost?** € 152.87 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/506058335-wirefy-3-4-heat-shrink-tubing-large-diameter-3-1)

## Best For

- wirefy enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Dual-wall construction resists heat, chemicals, abrasion, and mechanical stress—ideal for industrial and marine use.
- • **Shrink to Perfection:** 3:1 ratio shrinks tubing to 1/3 original size for a flawless, professional fit every time.
- • **Seal Out the Elements:** Heat-activated adhesive creates a waterproof, airtight seal that protects your connections from moisture and corrosion.
- • **Plug & Play Simplicity:** Slide on, apply heat, and watch it shrink—no fuss, no mess, just reliable insulation in seconds.
- • **Generous Length, Precise Diameter:** 50 feet of 3/4" tubing ensures you have the exact size and volume to tackle multiple projects without compromise.

## Overview

Wirefy 3/4" Heat Shrink Tubing offers a superior 3:1 shrink ratio for a tight, professional seal, enhanced by an adhesive lining that waterproofs and insulates connections. Its dual-wall, marine-grade polyolefin construction delivers exceptional durability against heat, chemicals, and abrasion. With 50 feet of tubing per roll and UL certification, it’s the trusted choice for automotive, marine, and industrial electrical projects demanding long-lasting protection and flawless performance.

## Description

Super Versatile Heat Shrink Tubing Are you looking to fix a damaged wire, seal out moisture, or provide enhanced strain relief? Wirefy waterproof heat shrink tubing is an easy to use solution that can be used in automotive, marine, hobby RC, and home electrical wiring projects. It can be used in a variety of applications such as: -Electrical insulation (wire repairs, insulating electrical terminals wires, protecting charging cables, insulating solder joints) -Environmental seal to protect from moisture, UV, fuel and chemicals -Strain relief for electrical terminals -Identifying wires and cables (color-coding) -Grouping loose wires (usually in wire harnesses) -Creating thermal insulation for heat sensitive components -Protecting surfaces against abrasion, peeling, and denting 3:1 Shrink Ratio Shrink Tube When heat is applied, this wire shrink wrap tubing will recover to a 1/3 of its original diameter. Its high recovery ratio makes it possible to repair most damaged cable jackets without removing connectors. Therefore, 3:1 shrink ratio tubing can be used in significantly more applications compared to 2:1 shrink ratio tubing. Heat Activated Adhesive Lining This is a waterproof shrink tubing with the internal adhesive layer. When heat is applied, a small fillet of clear adhesive (about 1 mm wide) becomes visible at the ends of the heated tubing. When cooled down, it forms a rigid seal. Heat activated glue strongly bonds to wires, terminals or any other surfaces. When adhesive flows, it pushes the air out and fills any gaps between the wire and the tubing, which makes the connection waterproof. For best results we recommend using a heat gun. UL Listed This industrial grade heat shrinkable tubing is UL listed and is compliant with all relevant electrical standards such as: SGS, RoHS, Reach, and ISO9001.

Review: Very high quality. Used for aluminium pole repair. - I had a snapped and bent aluminum boat canopy frame which I had straightened and repaired with tube inserts and rivets. Fine as far as it goes but I had the bright idea of encasing it in heat shrink to prevent any rough spots damaging the canopy, and to disguise the agricultural nature of the repair in general. I tested several different types of heat shrink, and this one is the clear winner. It is nice and thick, looks great, and I was able to shrink 5 metres of it with a blowtorch without scorching it at all. Add to that its excellent substrate of hot glue, and it's even strengthened the poles somewhat by laminating them. I'm absolutely delighted with the result, which would not have been possible with an inferior product.
Review: You pay for quality - Good quality but pricey, but if you are protecting electrics, then this is the one. Wish it came in shorter lengths, so I could have gotten a size down too. Shrinkage is uniform, have to cut open to re do and the wire comes away neatly which is also a bonus. Very durable but measured diameter wrong, but that's on me. I've used this on all my bikes wiring and seems solid so far.

## Features

- 3:1 SHRINK RATIO - Recovers to 1/3 of its original diameter, and makes a tight seal. Eliminates the problem of 2:1 tubing not shrinking tight enough.
- GLUE INSIDE - When heat is applied, adhesive comes out and seals the connection. This creates waterproof and long-lasting insulation.
- EASY TO USE - Simply slide heat shrink tube over your connection point and apply heat. Make professional insulated connections in seconds.
- DUAL WALL TUBING - Provides enhanced protection from wear and tear. Marine grade tubing is resistant to fluids, heat, and mechanical stretch.
- 3/4 INCH (19.1mm) SHRINK TUBING DIAMETER - Get the exact diameter you need. 50 Feet of shrink tubing will last through many projects.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09NWCRPHM |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 20,549 in DIY & Tools ( See Top 100 in DIY & Tools ) 12 in Tubes (DIY & Tools) |
| Certification | UL |
| Colour | Red |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,844) |
| Date First Available | 5 Jan. 2022 |
| Item Package Quantity | 1 |
| Item Weight | 940 g |
| Item model number | Wirefy-DWT-19.1-Red |
| Manufacturer | Wirefy |
| Material | polyolefin |
| Part Number | Wirefy-DWT-19.1-Red |
| Product Dimensions | 27.51 x 3.51 x 27.51 cm; 940 g |
| Size | 3/4" - 50 Feet |
| Style | Red |
| Voltage | 600 Volts (AC) |

## Images

![Wirefy 3/4" Heat Shrink Tubing - Large Diameter - 3:1 Ratio - Adhesive Lined - Industrial Heat-Shrink Tubing - Red - 50 Feet Roll - Image 1](https://m.media-amazon.com/images/I/81gGHwvLvgL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very high quality. Used for aluminium pole repair.
*by D***E on 29 January 2025*

I had a snapped and bent aluminum boat canopy frame which I had straightened and repaired with tube inserts and rivets. Fine as far as it goes but I had the bright idea of encasing it in heat shrink to prevent any rough spots damaging the canopy, and to disguise the agricultural nature of the repair in general. I tested several different types of heat shrink, and this one is the clear winner. It is nice and thick, looks great, and I was able to shrink 5 metres of it with a blowtorch without scorching it at all. Add to that its excellent substrate of hot glue, and it's even strengthened the poles somewhat by laminating them. I'm absolutely delighted with the result, which would not have been possible with an inferior product.

### ⭐⭐⭐⭐⭐ You pay for quality
*by P***E on 5 September 2025*

Good quality but pricey, but if you are protecting electrics, then this is the one. Wish it came in shorter lengths, so I could have gotten a size down too. Shrinkage is uniform, have to cut open to re do and the wire comes away neatly which is also a bonus. Very durable but measured diameter wrong, but that's on me. I've used this on all my bikes wiring and seems solid so far.

### ⭐⭐⭐⭐⭐ Excellent Adhesive Heatshrink
*by M***S on 18 August 2023*

It works exactly as I hoped. Some reviews said that the tubing walls were very thick but I found them to be perfect and actually thinner than some other tubing I've used. I also noted that it does a genuine 3:1 heat shrink as well. Very happy and highly recommended.

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-08*