--- product_id: 527564939 title: "3in Heat Shrink Tubing 3:1 Large Marine Heat Shrink Tube Dual Wall Adhesive Shrinkable Wire Wrap Tube, Fully Insulation (4 Feet Black Tubing)" brand: "elecfun" price: "2228924β‚«" currency: VND in_stock: true reviews_count: 5 category: "Elecfun" url: https://www.desertcart.vn/products/527564939-3in-heat-shrink-tubing-3-1-large-marine-heat-shrink store_origin: VN region: Vietnam --- # Dual-wall adhesive for waterproof insulation 3-inch diameter for large cables 3:1 shrink ratio for tight, secure seals 3in Heat Shrink Tubing 3:1 Large Marine Heat Shrink Tube Dual Wall Adhesive Shrinkable Wire Wrap Tube, Fully Insulation (4 Feet Black Tubing) **Brand:** elecfun **Price:** 2228924β‚« **Availability:** βœ… In Stock ## Summary > πŸ”₯ Seal it like a pro β€” shrink, protect, and conquer! πŸ’ͺ ## Quick Answers - **What is this?** 3in Heat Shrink Tubing 3:1 Large Marine Heat Shrink Tube Dual Wall Adhesive Shrinkable Wire Wrap Tube, Fully Insulation (4 Feet Black Tubing) by elecfun - **How much does it cost?** 2228924β‚« with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/527564939-3in-heat-shrink-tubing-3-1-large-marine-heat-shrink) ## 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 - β€’ **Built to Endure:** Outer abrasion-resistant layer plus inner strain relief means your connections stay safe in harsh environments. - β€’ **Shrink Fast, Seal Tight:** 3:1 shrink ratio guarantees a snug, professional-grade seal in seconds at 80-125Β°C. - β€’ **Versatile & Customizable:** Available in multiple sizes and colors, with bulk and custom orders supported for every project scale. - β€’ **Precision Fit, Every Time:** 3-inch diameter tubing ensures coverage for large marine and industrial cables with ease. - β€’ **Waterproof & Weatherproof:** Dual-wall adhesive lining creates a durable, moisture-resistant barrier for long-lasting protection. ## Overview ELECFUN’s 3-inch diameter, 3:1 shrink ratio heat shrink tubing features a dual-wall adhesive design that delivers waterproof, abrasion-resistant insulation ideal for marine, automotive, and industrial wiring. Engineered for durability and professional results, this 4-foot black polyolefin tube withstands harsh conditions while providing a tight, secure seal quickly and reliably. ## Description ELECFUN is a subsidiary of a 20-old company with strong factory resources, and collaborating with some Fortune 500 companies. ELECFUN has specialized in heat shrink tubing and cable connectors for years and has achieved unanimous acclaim in the industry. We provide top-quality heat shrink tubing at reasonable prices. ELECFUN empowers electricians and DIY lovers to make professional electrical connections through quality products. Our industrial heat-shrink tubing for wires has excellent flame retardant and insulation performance, good tightness, acid and alkali resistance, anti-aging, rust prevention, corrosion protection, durable. Our marine-grade heat shrink wrap is perfect for marine, automotive, electrical, wires, etc.ELECFUN's heat shrink tubing comes in kits, 4 Ft rolls, 50 Ft rolls and much more on desertcart. We offer a great variety of sizes (3/32" to 3") and colors (black, red, white, blue, clear). Our factory supports customized sizes and high volume B2B purchasing. Review: Reasonable price Review: I ordered this 3 inch heat shrink. What I got was 5 inch. I was able to use it anyway as it did shrink enough for what I wanted but it took a lot more time and heat and was starting to melt what I was trying to cover by the time it was done. UPDATE: The vendor reached out and refunded the purchase of this heat shrink and offered a smaller size free of charge therefore I am upping my review. The explanation for the size discrepancy didn't make sense to me, and didn't match what I experienced, but the fact that they were willing to take significant steps to make it right matters. ## Features - Tube's Diameter: 3 inches ( 80 mm ), it measured when round, not flat - Package: 1 pcs black 3 inch heat shrink tubing roll, total length: 4 feet - 3:1 Shrink Ratio: Shrink ratio of our industrial heatshrink tube is 3:1, which makes a tighter seal. Shrinkage temperature: 80 ~ 125 ℃, professional connections made in seconds - Adhesive Lined Heat Shrink Tubing: While heating, the adhesive lined comes out and seals the connection, creating waterproof and long-lasting insulation - Dual Wall Tube and Safer: Outer wall provides abrasion resistance. The inner wall creates a waterproof seal and strain relief - ELECFUN's heat shrink tubing comes in kits, 4 Ft rolls, 50 Ft rolls and much more. We offer a great variety of sizes (3/32” to 3”) and colors (black, red, white, blue, clear). Our factory supports customized sizes and high volume B2B purchasing. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09STBHCG2 | | Brand Name | ELECFUN | | Color | Black | | Customer Reviews | 4.4 4.4 out of 5 stars (184) | | Item Dimensions L x W | 121.9L x 2.5W centimeters | | Manufacturer | ELECFUN | | Material Type | Polyolefin | | Nominal Wall Thickness | 0.4 month | | UPC | 192389013099 | | Unit Count | 1.2192 Meters | ## Product Details - **Brand:** ELECFUN - **Colour:** Black - **Material:** Polyolefin - **Nominal wall thickness:** 0.4 month - **Product dimensions:** 121.9L x 2.5W centimeters ## Images ![3in Heat Shrink Tubing 3:1 Large Marine Heat Shrink Tube Dual Wall Adhesive Shrinkable Wire Wrap Tube, Fully Insulation (4 Feet Black Tubing) - Image 1](https://m.media-amazon.com/images/I/610YxK+OsIL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by N***G on 11 March 2026* Reasonable price ### ⭐⭐⭐⭐ Review *by C***S on 12 June 2025* I ordered this 3 inch heat shrink. What I got was 5 inch. I was able to use it anyway as it did shrink enough for what I wanted but it took a lot more time and heat and was starting to melt what I was trying to cover by the time it was done. UPDATE: The vendor reached out and refunded the purchase of this heat shrink and offered a smaller size free of charge therefore I am upping my review. The explanation for the size discrepancy didn't make sense to me, and didn't match what I experienced, but the fact that they were willing to take significant steps to make it right matters. ### ⭐⭐⭐⭐⭐ Review *by J***E on 13 July 2024* I know there are lots of complaints about not being the right length, the glue not worthy and quality. I'm here to tell you, I had none of these issues. The length was exactly four feet, and I cut eight inch sleves to go on pool noodles to make six sets of "Danny Go Pool Noodle Drum Sticks". The noodles are just under three inches diameter. The shrimk tube snuggled up nicely and while warm was very pliable to wrap around the edge and back into the hole in the center of the pool noodle. After completing all six sets and they cooled, I tried to slide a few off, and they all remained. The material shrunk very nicely and was so pliable that I am able to see the pool noodle texture through the material and when cooled and hard again, it looks really nice. Very happy with this shrink tube and I know where I'll buy more for other projects. ## Frequently Bought Together - ELECFUN 3 Inch Heat Shrink Tubing Roll, 3:1 Large Marine Grade Adhesive Lined Heatshrink Tube, Heavy Duty Dual Wall Shrinkable Wiring Wrap, Seal Against Moisture Corrosion and Air Leakage 4 ft - XHF 2 Inch (50mm) 3:1 Waterproof Heat Shrink Tubing Marine Grade Wire Cable Adhesive Lined Tube Insulation Seal Against Moisture Corrosion and Air Leakage, 4 Ft Black - 2 Inch Heat Shrink Tubing - 5 Ft 3:1Ratio Waterproof Heat Shrink Tubin - Adhesive Lined,Dual Wall Adhesive Shrinkable Wire Wrap Tube - Black --- ## 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.vn/products/527564939-3in-heat-shrink-tubing-3-1-large-marine-heat-shrink](https://www.desertcart.vn/products/527564939-3in-heat-shrink-tubing-3-1-large-marine-heat-shrink) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-16*