{"product_id":"orange-heat-shrink-tubing-3-1-adhesive-glue-lined","title":"Orange Heat Shrink Tubing 3:1 with Adhesive Glue Lined — 3.2mm to 30mm, 1m–10m","description":"\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right diameter for my wire or cable?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Select a diameter that is typically 20–30% larger than the outer diameter of the object you are covering before shrinking. For example, if your cable measures 6mm, a φ7.9mm tube generally provides a snug fit after shrinking. The 3:1 shrink ratio means the tubing will shrink down to roughly one-third of its supplied diameter.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What shrink temperature is required?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Dual-wall adhesive-lined heat shrink tubing of this type generally activates at around 70–90°C (158–194°F) and fully shrinks at approximately 120–135°C (248–275°F). A heat gun is recommended over an open flame for even, controlled shrinkage.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this tubing waterproof and suitable for outdoor or marine use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The inner adhesive layer melts and flows during shrinking to create a moisture-resistant seal around the substrate. This makes it well-suited for marine wiring, outdoor electrical connections, and other environments where moisture ingress is a concern.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between 2:1 and 3:1 heat shrink tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A 2:1 ratio means the tubing shrinks to half its original diameter, while a 3:1 ratio shrinks to one-third. The 3:1 ratio is better for covering connectors, splices, or irregular shapes where a tighter, more conforming fit is needed. The adhesive lining in this product adds an additional sealing layer not found in standard single-wall tubing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this tubing in automotive applications?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Adhesive-lined heat shrink tubing is commonly used in automotive wiring harnesses, battery terminal protection, and connector sealing. The orange color also aids in visual identification of specific circuits or wire groups.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I cut the tubing to length?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Standard scissors or a sharp utility knife work well for clean cuts. For larger diameters such as φ19.1mm–φ30mm, a rotary cutter or PVC pipe cutter generally produces a cleaner, more perpendicular edge.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What length should I order?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Lengths from 1m to 10m are available. For occasional repairs or small projects, 1–2m is typically sufficient. For wiring harness builds, marine rigging, or bulk electrical work, 5m or 10m rolls offer better value per meter.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eOrange Heat Shrink Tubing 3:1 Adhesive Glue Lined — Reliable Protection for Wires, Cables \u0026amp; Connectors\u003c\/h2\u003e\n    \u003cp\u003eExposed wire splices and bare connector ends are a liability in any electrical system — moisture creeps in, corrosion sets in, and failures follow. Whether you are a marine electrician, automotive technician, or a DIYer tackling a home wiring project, you need a sealing solution that holds up under real conditions. This orange heat shrink tubing with 3:1 adhesive glue lining was built for exactly that job.\u003c\/p\u003e\n    \u003cp\u003eEach order includes your chosen length (1m, 2m, 3m, 4m, 5m, 6m, or 10m) of dual-wall heat shrink tubing in the diameter you select. Available diameters range from φ3.2mm (≈1\/8\") to φ30mm (≈1-3\/16\"), covering everything from fine instrument wire to large battery cables. The outer wall is made from polyolefin, and the inner wall is a hot-melt adhesive that flows and bonds during shrinking to create a watertight, strain-relieving seal.\u003c\/p\u003e\n    \u003cp\u003eTypical applications include marine wiring harness protection, automotive battery terminal sealing, outdoor junction box connections, and industrial cable bundling where a color-coded orange sleeve helps identify circuits at a glance. The 3:1 shrink ratio makes this tubing especially useful for covering bulky connectors, crimped terminals, and stepped or irregular surfaces that standard 2:1 tubing cannot conform to tightly.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003eℹ️\u003c\/span\u003e\n    \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Works with standard polyolefin-compatible heat guns. Suitable for copper, aluminum, and tinned wire. Compatible with most crimp connectors, ring terminals, and butt splices in the corresponding diameter range.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e✅ Key Features of These Orange Adhesive-Lined 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\u003e3:1 Shrink Ratio\u003c\/strong\u003e — Shrinks to one-third of its supplied diameter, conforming tightly around connectors, stepped surfaces, and irregular cable profiles that 2:1 tubing cannot seal properly.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e💧\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eDual-Wall Adhesive Lining\u003c\/strong\u003e — The inner hot-melt adhesive layer flows during shrinking to create a moisture-resistant, waterproof seal — ideal for marine wiring and outdoor electrical connections exposed to rain or humidity.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎨\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eOrange Color for Circuit Identification\u003c\/strong\u003e — The bright orange finish makes it easy to visually distinguish specific wire groups or circuits in complex wiring harnesses, reducing troubleshooting time.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eWide Diameter Range\u003c\/strong\u003e — Six diameters from φ3.2mm (≈1\/8\") to φ30mm (≈1-3\/16\") cover fine instrument wire, medium automotive cable, and large battery or power cables in a single product line.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible Length Options\u003c\/strong\u003e — Choose from 1m to 10m per order so you buy exactly what your project needs — no leftover waste from oversized spools, no running short mid-job.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔧\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003ePolyolefin Outer Wall\u003c\/strong\u003e — The outer sleeve is made from cross-linked polyolefin, which generally offers good resistance to abrasion, chemicals, and UV exposure compared to standard PVC sleeving.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — Adhesive-Lined Heat Shrink Tubing\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eDual-Wall Adhesive-Lined Heat Shrink Tubing\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\u003eColor\u003c\/th\u003e\n\u003ctd\u003eOrange\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eAvailable Diameters (Supplied)\u003c\/th\u003e\n\u003ctd\u003eφ3.2mm (≈1\/8\"), φ7.9mm (≈5\/16\"), φ9.5mm (≈3\/8\"), φ19.1mm (≈3\/4\"), φ25.4mm (1\"), φ30mm (≈1-3\/16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eAvailable Lengths\u003c\/th\u003e\n\u003ctd\u003e1m, 2m, 3m, 4m, 5m, 6m (φ30mm only), 10m\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOuter Wall Material\u003c\/th\u003e\n\u003ctd\u003eCross-linked polyolefin\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eInner Wall Material\u003c\/th\u003e\n\u003ctd\u003eHot-melt adhesive (thermoplastic)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eActivation Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically 70–90°C (158–194°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFull Shrink Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically 120–135°C (248–275°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWall Thickness (after shrink)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eVoltage Rating\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOperating Temperature Range\u003c\/th\u003e\n\u003ctd\u003eGenerally -55°C to +125°C (-67°F to +257°F)\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\u003eMarine wiring, automotive harness, outdoor electrical, industrial cable bundling\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-note\"\u003e\n    \u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e\n    \u003cstrong\u003eNote:\u003c\/strong\u003e Wall thickness and exact voltage ratings vary by diameter. If your application has specific electrical or mechanical requirements, please contact us to confirm before ordering.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-faq\"\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right diameter for my wire or cable?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eSelect a diameter that is typically 20–30% larger than the outer diameter of the object you are covering before shrinking. For example, if your cable measures 6mm, a φ7.9mm tube generally provides a snug fit after shrinking. The 3:1 shrink ratio means the tubing will shrink down to roughly one-third of its supplied diameter, so there is more room for error than with 2:1 tubing.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat shrink temperature is required?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eDual-wall adhesive-lined heat shrink tubing of this type generally activates at around 70–90°C (158–194°F) and fully shrinks at approximately 120–135°C (248–275°F). A heat gun is recommended over an open flame for even, controlled shrinkage. Move the heat gun steadily along the tube rather than holding it in one spot to avoid scorching.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs this tubing waterproof and suitable for outdoor or marine use?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes. The inner adhesive layer melts and flows during shrinking to create a moisture-resistant seal around the substrate. This makes it well-suited for marine wiring, outdoor electrical connections, and other environments where moisture ingress is a concern. For fully submerged applications, contact us to confirm suitability for your specific conditions.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the difference between 2:1 and 3:1 heat shrink tubing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eA 2:1 ratio means the tubing shrinks to half its original diameter, while a 3:1 ratio shrinks to one-third. The 3:1 ratio is better for covering connectors, splices, or irregular shapes where a tighter, more conforming fit is needed. The adhesive lining in this product adds an additional sealing layer not found in standard single-wall tubing, making it more suitable for demanding environments.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use this tubing in automotive applications?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes. Adhesive-lined heat shrink tubing is commonly used in automotive wiring harnesses, battery terminal protection, and connector sealing. The orange color also aids in visual identification of specific circuits or wire groups within a harness. The tubing generally tolerates the temperature ranges found in engine bays, though placement near direct heat sources should be evaluated case by case.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I cut the tubing to length?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eStandard scissors or a sharp utility knife work well for clean cuts on smaller diameters. For larger diameters such as φ19.1mm–φ30mm, a rotary cutter or PVC pipe cutter generally produces a cleaner, more perpendicular edge. Cut slightly longer than needed — you can always trim after shrinking, but you cannot add length back.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat length should I order?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eLengths from 1m to 10m are available. For occasional repairs or small projects, 1–2m is typically sufficient. For wiring harness builds, marine rigging, or bulk electrical work, 5m or 10m rolls offer better value per meter. The φ30mm diameter also comes in a 6m option for mid-range project needs.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your diameter and length above, then add to cart — ships from our US warehouse.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"φ3.2mm \/ 1","offer_id":52329918791954,"sku":"GLFBQLPGLBZSJ000474x1","price":3.39,"currency_code":"USD","in_stock":true},{"title":"φ3.2mm \/ 2","offer_id":52329918824722,"sku":"GLFBQLPGLBZSJ000474x2","price":4.01,"currency_code":"USD","in_stock":true},{"title":"φ3.2mm \/ 3","offer_id":52329918857490,"sku":"GLFBQLPGLBZSJ000474x3","price":4.61,"currency_code":"USD","in_stock":true},{"title":"φ3.2mm \/ 4","offer_id":52329918890258,"sku":"GLFBQLPGLBZSJ000474x4","price":5.29,"currency_code":"USD","in_stock":true},{"title":"φ3.2mm \/ 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1","offer_id":52329919381778,"sku":"GLFBQLPGLBZSJ000477x1","price":7.82,"currency_code":"USD","in_stock":true},{"title":"φ19.1mm \/ 2","offer_id":52329919414546,"sku":"GLFBQLPGLBZSJ000477x2","price":14.35,"currency_code":"USD","in_stock":true},{"title":"φ19.1mm \/ 3","offer_id":52329919447314,"sku":"GLFBQLPGLBZSJ000477x3","price":20.88,"currency_code":"USD","in_stock":true},{"title":"φ19.1mm \/ 4","offer_id":52329919480082,"sku":"GLFBQLPGLBZSJ000477x4","price":27.4,"currency_code":"USD","in_stock":true},{"title":"φ19.1mm \/ 5","offer_id":52329919512850,"sku":"GLFBQLPGLBZSJ000477x5","price":33.93,"currency_code":"USD","in_stock":true},{"title":"φ19.1mm \/ 10","offer_id":52329919545618,"sku":"GLFBQLPGLBZSJ000477x10","price":66.57,"currency_code":"USD","in_stock":true},{"title":"φ25.4mm \/ 1","offer_id":52329919578386,"sku":"GLFBQLPGLBZSJ000478x1","price":9.1,"currency_code":"USD","in_stock":true},{"title":"φ25.4mm \/ 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