--- product_id: 652949053 title: "3/8 Inch Heat Shrink Tubing - 16.5Ft 3:1Ratio Waterproof Heat Shrink Tubin - Adhesive Lined,Dual Wall Adhesive Shrinkable Wire Wrap Tube - Black" brand: "allwin" price: "57.11 DT" currency: TND in_stock: true reviews_count: 8 category: "Allwin" url: https://www.desertcart.tn/products/652949053-3-8-inch-heat-shrink-tubing-16-5ft-3-1ratio store_origin: TN region: Tunisia --- # 3:1 shrink ratio for tight seal Adhesive-lined for instant waterproof bond Dual wall for abrasion & waterproofing 3/8 Inch Heat Shrink Tubing - 16.5Ft 3:1Ratio Waterproof Heat Shrink Tubin - Adhesive Lined,Dual Wall Adhesive Shrinkable Wire Wrap Tube - Black **Brand:** allwin **Price:** 57.11 DT **Availability:** βœ… In Stock ## Summary > πŸ”₯ Seal it tight, protect it right β€” the pro’s choice for flawless connections! ## Quick Answers - **What is this?** 3/8 Inch Heat Shrink Tubing - 16.5Ft 3:1Ratio Waterproof Heat Shrink Tubin - Adhesive Lined,Dual Wall Adhesive Shrinkable Wire Wrap Tube - Black by allwin - **How much does it cost?** 57.11 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/652949053-3-8-inch-heat-shrink-tubing-16-5ft-3-1ratio) ## Best For - allwin enthusiasts ## Why This Product - Trusted allwin brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Dual Wall Durability:** Outer abrasion-resistant layer plus inner adhesive seal for ultimate protection. - β€’ **Versatile Application:** Perfect for wiring, solder joints, DIY electronics, and even fitness gear repairs. - β€’ **Precision 3:1 Shrink Ratio:** Shrinks to 1/3 size for a snug, professional fit every time. - β€’ **Waterproof Seal Technology:** Heat-activated glue ensures moisture-proof, long-lasting connections. - β€’ **Effortless Professional Finish:** Simply slide on, heat, and secureβ€”no mess, no fuss, just reliable results. ## Overview This 3/8 inch black heat shrink tubing offers a superior 3:1 shrink ratio, shrinking to one-third its size for a tight, secure fit. Featuring dual-wall construction with an adhesive lining, it provides excellent abrasion resistance and a waterproof seal, ideal for electrical insulation, corrosion protection, and wire harnessing. At 16.5 feet long, it’s versatile enough for professional-grade repairs and DIY projects alike. ## Description 3/8 Inch Heat Shrink Tubing - 16.5Ft 3:1Ratio Waterproof Heat Shrink Tubin - Adhesive Lined,Dual Wall Adhesive Shrinkable Wire Wrap Tube - Black: desertcart.com: Industrial & Scientific Review: Good quality product. - Works as it should. I ordered this large size so I could repair three wire cords. Each individual wire is repaired and appropriate size heat shrink used and then this one is put over all three. ai love heat shrink that has adhesive inside because it helps make a connection dependably water proof. If shrunk down well when heated and had an adequate amount of adhesive inside so as to create a waterproof seal. Review: Good for the money - So if I'm not mistaken I got this in blue and it was used to tie up the ends of this blue net wrapping that I was putting over my vacuum hoses to doll up my engine bay a bit. Seems like decent quality stuff. The he activated glue on the inside gets annoying after a while but it's there for a reason. The color could have been a bit more vibrant but wouldn't say it's bad. Worked well to protect the edges of the netting to keep it from fraying out. ## Features - 3:1 SHRINK RATIO: 3:1 heat shrink ratio and will shrink to the original 1/3,and makes a tight seal. Eliminates the problem of 2:1 tubing not shrinking tight enough.Package: 1 pcs black 3/8 inch(9.5mm) heat shrink tubing roll, total length: 16.5 feet - GOOD TIGHTNESS:Glue inside,When heat is applied, adhesive comes out and seals the connection.Dual wall adhesive heat shrink tube has the advantages of good electrical insulation, good sealing and high temperature resistance. - DUAL WALL TUBING - Provides enhanced protection from wear and tear. The outer wall provides abrasion resistance. The inner wall creates a waterproof seal and strain relief - EASY TO USE:Slide the heat shrink tube over your connection point and apply heat. Make professional insulated connections in seconds. - WIDELY USE - Our heat shrink tubing are widely used in wire connection, rust prevention and corrosion protection of solder joints, protection and insulation processing of wire end, wiring harness and electronic components, and audio and electrical DIY. Fitness equipment parts and steel structure surface protection and so on. ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.6 out of 5 stars 1,007 Reviews | ## Images ![3/8 Inch Heat Shrink Tubing - 16.5Ft 3:1Ratio Waterproof Heat Shrink Tubin - Adhesive Lined,Dual Wall Adhesive Shrinkable Wire Wrap Tube - Black - Image 1](https://m.media-amazon.com/images/I/61odJX72U7L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good quality product. *by R***N on December 15, 2025* Works as it should. I ordered this large size so I could repair three wire cords. Each individual wire is repaired and appropriate size heat shrink used and then this one is put over all three. ai love heat shrink that has adhesive inside because it helps make a connection dependably water proof. If shrunk down well when heated and had an adequate amount of adhesive inside so as to create a waterproof seal. ### ⭐⭐⭐⭐⭐ Good for the money *by K***H on November 10, 2025* So if I'm not mistaken I got this in blue and it was used to tie up the ends of this blue net wrapping that I was putting over my vacuum hoses to doll up my engine bay a bit. Seems like decent quality stuff. The he activated glue on the inside gets annoying after a while but it's there for a reason. The color could have been a bit more vibrant but wouldn't say it's bad. Worked well to protect the edges of the netting to keep it from fraying out. ### ⭐⭐⭐⭐⭐ Flexible and Effective for Automotive Wiring *by J***N on June 10, 2025* I recently used the 3/8 Inch Heat Shrink Tubing in my Jeep for some wiring projects, and it worked really well. The 3:1 ratio provides a solid shrink and tight fit, and the adhesive-lined, dual-wall design ensures a durable seal. One of the standout features for me was how flexible the tubing is. It was easy to route around corners and fit into tighter spaces, which is often a challenge when working inside a vehicle. The waterproof nature of the tubing also gives me confidence that it will provide long-lasting protection against moisture and corrosion, which is important for any automotive electrical work. It shrinks evenly and securely when heat is applied, providing reliable insulation for the wires inside. Overall, this tubing is a great option for automotive wiring, especially when you need something that’s flexible enough for tight spaces but still provides the protection and sealing you need. It worked perfectly for my Jeep and I’d recommend it for similar applications. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/652949053-3-8-inch-heat-shrink-tubing-16-5ft-3-1ratio](https://www.desertcart.tn/products/652949053-3-8-inch-heat-shrink-tubing-16-5ft-3-1ratio) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-27*