{"product_id":"9-5mm-dual-wall-heat-shrink-tubing-3-1-adhesive-lined-waterproof","title":"9.5mm Dual Wall Heat Shrink Tubing 3:1 Ratio – Adhesive Lined, Waterproof","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003c!-- ① OVERVIEW --\u003e\n\u003ch2\u003e9.5mm Dual Wall Heat Shrink Tubing — Waterproof Protection for Wires \u0026amp; Cables\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003cp\u003eExposed wire splices and bare connectors are a liability — moisture, vibration, and abrasion can cause shorts, corrosion, and failed connections at the worst possible moment. Whether you're rewiring a trailer, repairing automotive harnesses, or sealing marine electrical joints, you need insulation that actually locks out water rather than just covering the wire.\u003c\/p\u003e\n\u003cp\u003eThis kit features 9.5mm (≈3\/8\") inner diameter dual wall heat shrink tubing with a 3:1 shrink ratio. The outer wall is a flexible polyolefin sleeve; the inner wall is a hot-melt adhesive lining that flows and bonds to the cable surface when heated, forming a tight, moisture-resistant seal. Available in 7 colors (Black, White, Red, Green, Yellow, Blue, Transparent) and four cut lengths — 1m (≈3.3 ft), 2m (≈6.6 ft), 5m (≈16.4 ft), and 10m (≈32.8 ft) — so you can order exactly what your project requires.\u003c\/p\u003e\n\u003cp\u003eTypical applications include automotive wiring harness repair, trailer and RV connector sealing, marine and boat electrical connections, and outdoor low-voltage cable protection. The color-coded options also make it easy to organize multi-circuit wiring systems for quick identification during future maintenance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- ② COMPATIBILITY BAR --\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔌\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits cables and wire bundles with an outer diameter of approximately 3mm–8mm. Inner diameter before shrinking: 9.5mm (≈3\/8\"). Shrinks to approximately 3.2mm minimum recovered diameter. Confirm your cable OD before ordering.\u003c\/div\u003e\n\u003c!-- ③ KEY FEATURES --\u003e\n\u003ch2\u003e✅ Key Features of These 9.5mm Dual Wall Heat Shrink Tubes\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e💧\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eAdhesive-Lined Waterproof Seal\u003c\/strong\u003e — The inner hot-melt adhesive layer flows during shrinking to bond directly to the cable jacket, creating a moisture-resistant barrier that helps prevent corrosion in outdoor and marine wiring applications.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e3:1 Shrink Ratio\u003c\/strong\u003e — A wider recovery range than standard 2:1 tubing, allowing this dual wall heat shrink to conform tightly around irregular shapes, stepped connectors, and multi-wire splices without gaps.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎨\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e7 Color Options for Circuit ID\u003c\/strong\u003e — Black, White, Red, Green, Yellow, Blue, and Transparent variants let you color-code wiring circuits for fast identification — a standard practice in automotive and electrical wiring harness work.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFour Cut Lengths — 1m to 10m\u003c\/strong\u003e — Order the exact quantity your job needs. The 1m and 2m options suit single repairs; the 5m and 10m rolls are cost-effective for larger wiring harness projects or workshop stock.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔥\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Polyolefin Outer Wall\u003c\/strong\u003e — Remains pliable after shrinking, so the sealed connection can flex with vibration and movement without cracking — important for automotive, trailer, and marine environments.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eElectrical Insulation \u0026amp; Strain Relief\u003c\/strong\u003e — Provides a secondary layer of electrical insulation over splices and terminals, while the adhesive bond adds mechanical strain relief to reduce stress at the connection point.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- ④ TECHNICAL SPECIFICATIONS --\u003e\n\u003ch2\u003e📐 Technical Specifications — Dual Wall Adhesive Heat Shrink Tubing\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eInner Diameter (Before Shrink)\u003c\/th\u003e\n\u003ctd\u003e9.5mm (≈3\/8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShrink Ratio\u003c\/th\u003e\n\u003ctd\u003e3:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall Construction\u003c\/th\u003e\n\u003ctd\u003eDual wall — polyolefin outer \/ hot-melt adhesive inner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMinimum Recovered Diameter\u003c\/th\u003e\n\u003ctd\u003eTypically ≈3.2mm (contact us to confirm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Shrink Temperature\u003c\/th\u003e\n\u003ctd\u003eGenerally 120–150°C (248–302°F); adhesive activates at higher range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Colors\u003c\/th\u003e\n\u003ctd\u003eBlack, White, Red, Green, Yellow, Blue, Transparent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Lengths\u003c\/th\u003e\n\u003ctd\u003e1m (≈3.3 ft), 2m (≈6.6 ft), 5m (≈16.4 ft), 10m (≈32.8 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSuitable Cable OD Range\u003c\/th\u003e\n\u003ctd\u003eTypically 3mm–8mm (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication Method\u003c\/th\u003e\n\u003ctd\u003eHeat gun recommended; avoid open flame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical Use Cases\u003c\/th\u003e\n\u003ctd\u003eAutomotive, marine, trailer, outdoor low-voltage wiring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-note\"\u003e\n\u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e \u003cstrong\u003eNote:\u003c\/strong\u003e Always verify your cable's outer diameter against the tubing's recovered diameter before installation. If you need a different inner diameter or shrink ratio, contact us to confirm the right variant.\u003c\/div\u003e\n\u003c!-- ⑤ FAQ --\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right length of heat shrink tubing?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the total run of wire or cable you need to protect, then add at least 10–15% extra for overlap and trimming. Available lengths are 1m (≈3.3 ft), 2m (≈6.6 ft), 5m (≈16.4 ft), and 10m (≈32.8 ft). For larger projects, the 5m or 10m rolls typically offer better value per meter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat shrink ratio does this tubing use, and why does it matter?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThis tubing uses a 3:1 shrink ratio, meaning it shrinks to one-third of its original 9.5mm diameter when heated. That wider recovery range makes it suitable for irregular shapes, connectors, and splices where a standard 2:1 tube would not conform tightly enough to create a reliable seal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this heat shrink tubing be used outdoors or in wet environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The dual wall construction includes an inner adhesive layer that melts and flows during shrinking to create a moisture-resistant seal around the cable. This makes it generally suitable for outdoor wiring, marine applications, trailer connectors, and other environments where moisture ingress is a concern.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat wire or cable sizes does the 9.5mm tubing fit?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eWith a 9.5mm (≈3\/8\") inner diameter before shrinking and a 3:1 ratio, this tubing typically accommodates wire bundles and cables ranging from approximately 3mm to 8mm in outer diameter. Please measure and confirm your cable's OD before ordering to ensure a proper fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat temperature is needed to shrink this tubing?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eDual wall adhesive-lined heat shrink tubing generally requires a heat source of around 120–150°C (248–302°F) to begin shrinking, with the adhesive fully activating at the higher end of that range. A heat gun is strongly recommended over an open flame for even, controlled shrinking without scorching the tubing or cable jacket.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this tubing compatible with automotive and marine wiring?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The adhesive-lined waterproof design is commonly used in automotive wiring harnesses, trailer connectors, boat wiring, and RV electrical systems. The flexible polyolefin outer wall maintains its seal even with the vibration and temperature cycling typical in these environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the color affect performance or shrink behavior?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eNo. All color variants share the same dual wall adhesive-lined construction and 3:1 shrink ratio. Color selection is purely for identification, organization, or aesthetic preference — a common practice in automotive and electrical wiring to distinguish circuits at a glance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c!-- ⑥ CTA BAR --\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your color and length above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"Black \/ φ9.5mm \/ 1 Metre","offer_id":52330360144146,"sku":"GYWXWGLBZSJ000409x1","price":2.57,"currency_code":"USD","in_stock":true},{"title":"White \/ φ9.5mm \/ 1 Metre","offer_id":52330360176914,"sku":"GYWXWGLBZSJ000410x1","price":2.79,"currency_code":"USD","in_stock":true},{"title":"Red \/ φ9.5mm \/ 1 Metre","offer_id":52330360209682,"sku":"GYWXWGLBZSJ000411x1","price":2.79,"currency_code":"USD","in_stock":true},{"title":"Green \/ φ9.5mm \/ 1 Metre","offer_id":52330360242450,"sku":"GYWXWGLBZSJ000412x1","price":2.79,"currency_code":"USD","in_stock":true},{"title":"Yellow \/ φ9.5mm \/ 1 Metre","offer_id":52330360275218,"sku":"GYWXWGLBZSJ000413x1","price":2.79,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ9.5mm \/ 1 Metre","offer_id":52330360307986,"sku":"GYWXWGLBZSJ000414x1","price":2.79,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ φ9.5mm \/ 1 Metre","offer_id":52330360340754,"sku":"GYWXWGLBZSJ000415x1","price":2.79,"currency_code":"USD","in_stock":true},{"title":"Black \/ φ9.5mm \/ 2 Metre","offer_id":52330360373522,"sku":"GYWXWGLBZSJ000409x2","price":4.42,"currency_code":"USD","in_stock":true},{"title":"White \/ φ9.5mm \/ 2 Metre","offer_id":52330360406290,"sku":"GYWXWGLBZSJ000410x2","price":4.83,"currency_code":"USD","in_stock":true},{"title":"Red \/ φ9.5mm \/ 2 Metre","offer_id":52330360439058,"sku":"GYWXWGLBZSJ000411x2","price":4.83,"currency_code":"USD","in_stock":true},{"title":"Green \/ φ9.5mm \/ 2 Metre","offer_id":52330360471826,"sku":"GYWXWGLBZSJ000412x2","price":4.83,"currency_code":"USD","in_stock":true},{"title":"Yellow \/ φ9.5mm \/ 2 Metre","offer_id":52330360504594,"sku":"GYWXWGLBZSJ000413x2","price":4.83,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ9.5mm \/ 2 Metre","offer_id":52330360537362,"sku":"GYWXWGLBZSJ000414x2","price":4.83,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ φ9.5mm \/ 2 Metre","offer_id":52330360570130,"sku":"GYWXWGLBZSJ000415x2","price":4.83,"currency_code":"USD","in_stock":true},{"title":"Black \/ φ9.5mm \/ 5 Metre","offer_id":52330360602898,"sku":"GYWXWGLBZSJ000409x5","price":9.96,"currency_code":"USD","in_stock":true},{"title":"White \/ φ9.5mm \/ 5 Metre","offer_id":52330360635666,"sku":"GYWXWGLBZSJ000410x5","price":10.98,"currency_code":"USD","in_stock":true},{"title":"Red \/ φ9.5mm \/ 5 Metre","offer_id":52330360668434,"sku":"GYWXWGLBZSJ000411x5","price":10.98,"currency_code":"USD","in_stock":true},{"title":"Green \/ φ9.5mm \/ 5 Metre","offer_id":52330360701202,"sku":"GYWXWGLBZSJ000412x5","price":10.98,"currency_code":"USD","in_stock":true},{"title":"Yellow \/ φ9.5mm \/ 5 Metre","offer_id":52330360733970,"sku":"GYWXWGLBZSJ000413x5","price":10.98,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ9.5mm \/ 5 Metre","offer_id":52330360766738,"sku":"GYWXWGLBZSJ000414x5","price":10.98,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ φ9.5mm \/ 5 Metre","offer_id":52330360799506,"sku":"GYWXWGLBZSJ000415x5","price":10.98,"currency_code":"USD","in_stock":true},{"title":"Black \/ φ9.5mm \/ 10 Metre","offer_id":52330360832274,"sku":"GYWXWGLBZSJ000409x10","price":19.19,"currency_code":"USD","in_stock":true},{"title":"White \/ φ9.5mm \/ 10 Metre","offer_id":52330360865042,"sku":"GYWXWGLBZSJ000410x10","price":21.2,"currency_code":"USD","in_stock":true},{"title":"Red \/ φ9.5mm \/ 10 Metre","offer_id":52330360897810,"sku":"GYWXWGLBZSJ000411x10","price":21.2,"currency_code":"USD","in_stock":true},{"title":"Green \/ φ9.5mm \/ 10 Metre","offer_id":52330360930578,"sku":"GYWXWGLBZSJ000412x10","price":21.2,"currency_code":"USD","in_stock":true},{"title":"Yellow \/ φ9.5mm \/ 10 Metre","offer_id":52330360963346,"sku":"GYWXWGLBZSJ000413x10","price":21.2,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ9.5mm \/ 10 Metre","offer_id":52330360996114,"sku":"GYWXWGLBZSJ000414x10","price":21.2,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ φ9.5mm \/ 10 Metre","offer_id":52330361028882,"sku":"GYWXWGLBZSJ000415x10","price":21.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture4of15_f81c5bdc-f432-4bc7-bd7f-99e4c212a254.jpg?v=1780893147","url":"https:\/\/homediyer.com\/products\/9-5mm-dual-wall-heat-shrink-tubing-3-1-adhesive-lined-waterproof","provider":"HomeDIYer","version":"1.0","type":"link"}