--- product_id: 332677571 title: "365pcs Waterproof Heat Shrink Tubing Kit 3:1" brand: "elecfun" price: "$26.84" currency: USD in_stock: true reviews_count: 13 category: "Elecfun" url: https://www.desertcart.us/products/332677571-365pcs-waterproof-heat-shrink-tubing-kit-3-1 store_origin: US region: United States of America --- # Adhesive-lined waterproof seal 3:1 shrink ratio for tight seals Dual-wall abrasion & strain relief 365pcs Waterproof Heat Shrink Tubing Kit 3:1 **Brand:** elecfun **Price:** $26.84 **Availability:** ✅ In Stock ## Summary > 🔥 Seal it tight, protect it right — the ultimate heat shrink kit for pros! ## Quick Answers - **What is this?** 365pcs Waterproof Heat Shrink Tubing Kit 3:1 by elecfun - **How much does it cost?** $26.84 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/332677571-365pcs-waterproof-heat-shrink-tubing-kit-3-1) ## Best For - elecfun enthusiasts ## Why This Product - Trusted elecfun brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Multi-Industry Ready:** Ideal for automotive, marine, DIY, and industrial use—protects against rust, corrosion, and wear. - • **Versatile Size Range:** 7 essential diameters pre-cut for perfect fit on common wire gauges—ready for any project. - • **Dual-Layer Durability:** Outer abrasion-resistant shell plus inner waterproof layer ensures maximum safety and longevity. - • **Precision 3:1 Shrink Ratio:** Achieve a snug, professional-grade seal in seconds with rapid heat activation. - • **Waterproof Adhesive Lining:** Heat-activated glue creates a durable, moisture-proof barrier for long-lasting protection. ## Overview ELECFUN’s 365-piece Heat Shrink Tubing Kit features a powerful 3:1 shrink ratio and dual-wall polyolefin construction with heat-activated adhesive lining, delivering waterproof, abrasion-resistant, and strain-relief protection. With 7 pre-cut sizes tailored for common wire gauges, this kit is engineered for professional-grade electrical insulation and environmental sealing across automotive, marine, and DIY applications. ## Description Product description hero-video ELECFUN Versatile Heat Shrink Tubing Looking to fix a damaged wire, seal out moisture, or provide enhanced strain relief? ELECFUN heat shrink tubing is a great solution, which used in automotive, marine electronics, DIY, and home wiring projects. Such as: 1.Electrical insulation (wire repairs, insulating terminals wires, protecting charging cables, car battery cable ends) 2. Environmental seal to protect from moisture, UV, fuel, and chemicals 3. Strain relief for electrical terminals 4. Grouping loose wires (usually in wire end) 5. Creating thermal insulation for heat-sensitive components 6. Protecting surfaces against abrasion, peeling, fuel resistant, and denting... 3:1 Shrink Ratio & Dual Wall When heating with a heat gun or other heater, the tubing will recover to 1/3 of its original diameter, which makes it possible to repair most damaged cable jackets without removing connectors. The dual wall tube provides better rigidity and abrasion. The double thick polyolefin tubing secures durable safe for projects. Heat Activated Adhesive Lined Our waterproof tubing has an internal adhesive layer. When heating, shrink tubing recovers and the internal adhesive layer melts. A small fillet of clear adhesive becomes visible at the end of the heated tubing. When cooled down, it forms a rigid seal. Heat-activated glue strongly adheres to wires, terminals, or any other surfaces. Meet Your Different Needs ELECFUN's heatshrink tubing comes in assortment kit, 4, 8, 10, 20, 50 Ft rolls and much more. We offer a great variety of sizes (3/32", 1/8" ,3/16" ,1/4" ,3/8" ,1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", and larger) and colors (black, red, white, blue, clear, brown), also include 2:1, 3:1, 4:1 shrink ratio fully insulated thick tubings. If you don't know the specific size requirements, just tell me wires'gauge, and we'll give you the most accurate choice. Our factory supports customized sizes and high volume B2B purchasing. COMPARE OUR PRODUCTS Heat shrink tubing kit Large heat shrink tubing 3 inch heat shrink tubing Large Heat shrink tubing Heat shrink tubing Wire connectors kit Review: Worth every penny - Bought this kit went to rewired my boat trailer. Everything worked the way it should. It was perfect. Review: Good pricr - Work great, use them all the time. ## Features - [3:1 Shrink Ratio & Fast Shrink] Shrink ratio of our industrial heat shrink tubing is 3:1, which makes a tightness seal. Shrinking temperature: 80 - 125 ℃, professional connections made in seconds - [Adhesive Lined Heat Shrink Tubing] While heating, the adhesive lined comes out and sealing the connection, creating waterproof and long-lasting insulation - [Dual Wall Tube & Safer] Outer wall provides abrasion resistance. Inner wall creates a waterproof seal and strain relief. The double thick polyolefin heatshrink tubing secures durable safe for projects - [7 Sizes] The kit includes 7 most commonly used diameters ranging from 3/32 to 3/4 inch, and precut to 1.77" long. It fits for commonly used home wire connection gauge - [Wide Applications] Our water tight heatshrink tube is idael for home, industrial, ship, automotive, weatherproof, rust and corrosion protection, solder joints, mobile charging cable, earphone, LED, RC aircraft, audio maintenance, and electrical DIY - [ELECFUN Advantage] Our factory offer a great variety of colors and small and big sizes (e.g. 3/32", 1/8" ... 1.25",1.5",1.75", 2.5",3",3.5", and larger dia) rolls and kits. Supporting customized sizes, special usage tubing and high volume B2B purchasing ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DL5319R2 | | Best Sellers Rank | #84,865 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #252 in Industrial Heat-Shrink Tubing #1,345 in Industrial Tubing | | Brand | ELECFUN | | Brand Name | ELECFUN | | Color | Black | | Customer Reviews | 4.7 out of 5 stars 1,966 Reviews | | Item Length | 1.77 Inches | | Manufacturer | ELECFUN | | Material | Polyolefin | | Material Type | Polyolefin | | Outside Diameter | 0.75 Inches | | Unit Count | 400.0 Count | ## Product Details - **Brand:** ELECFUN - **Color:** Red/Black - **Item Length:** 3.54 Inches - **Item Weight:** 0.25 Kilograms - **Manufacturer:** ELECFUN - **Material:** Polyolefin - **Nominal Wall Thickness:** 1 month - **Outside Diameter:** 1.5 Inches - **Set Name:** ELECFUN Heat Shrink Tubing Kit (365pcs, 7 Sizes, Black/Red, 3:1 Ratio, Adhesive Lined) - **UPC:** 192389005292 ## Images ![365pcs Waterproof Heat Shrink Tubing Kit 3:1 - Image 1](https://m.media-amazon.com/images/I/71FoA+bxrSL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worth every penny *by A***A on January 30, 2026* Bought this kit went to rewired my boat trailer. Everything worked the way it should. It was perfect. ### ⭐⭐⭐⭐⭐ Good pricr *by B***M on February 23, 2026* Work great, use them all the time. ### ⭐⭐⭐⭐⭐ Good product good price *by B***. on May 10, 2026* I like the shrinks and do a good job. ## Frequently Bought Together - ELECFUN Waterproof Heat Shrink Tubing Kit 365 pcs, 3:1 Dual Wall Tube - Adhesive Lined Heatshrink for Wires - Marine Grade and Industrial Shrinkable Wiring Wrap Fully Insulation Black/Red, 7 Sizes - Kuject 320PCS Heat Shrink Wire Connectors Kit, Electrical Waterproof Crimp Butt Terminals, Insulated Spade Connectors for Automotive Marine Boat Truck, Include Rings Forks Spade Butt Splices - 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/332677571-365pcs-waterproof-heat-shrink-tubing-kit-3-1](https://www.desertcart.us/products/332677571-365pcs-waterproof-heat-shrink-tubing-kit-3-1) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-06-23*