{"product_id":"18mm-heat-shrink-tubing-2-1-wire-wrap","title":"18mm Heat Shrink Tubing 2:1 – Electrical Wire Wrap, Assorted Colors","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 length of heat shrink tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure the total cable run you need to protect and add 10–15% extra for overlap and trimming. For a single splice, 1 metre is typically sufficient. For wiring harnesses or longer runs, 5 or 10 metre rolls offer better value. Available lengths: 1m (≈3.3 ft), 2m (≈6.6 ft), 5m (≈16.4 ft), 10m (≈32.8 ft).\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does 2:1 shrink ratio mean?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A 2:1 shrink ratio means the tubing shrinks to half its original inner diameter when heat is applied. This 18mm tubing will shrink down to approximately 9mm, creating a snug, protective sleeve around your wire or cable.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What temperature is needed to shrink this tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This tubing generally activates at around 70–90°C (158–194°F) and fully shrinks at approximately 120°C (248°F). A standard heat gun is recommended. A lighter can work in a pinch but may cause uneven shrinkage or scorching.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this heat shrink tubing be used outdoors or in automotive applications?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Polyolefin heat shrink tubing is generally resistant to moisture, UV exposure, and common automotive fluids, making it suitable for car wiring, marine connections, and outdoor electrical repairs. For harsh chemical environments, confirm compatibility before use.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What wire sizes does 18mm heat shrink tubing fit?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"With an inner diameter of 18mm (≈0.71\\\"), this tubing fits wire bundles, connectors, and cable ends up to approximately 17mm in diameter before shrinking. After shrinking, it conforms tightly to cables as small as roughly 9mm. For individual wires, it is typically used for larger gauge cables or grouped wire bundles.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the tubing RoHS compliant and safe for electrical use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This tubing is generally manufactured from polyolefin material, which is commonly RoHS compliant and rated for standard electrical insulation applications. If your project requires specific certifications (UL, CSA, MIL-SPEC), please contact us to confirm before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I cut the tubing to a custom length?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Absolutely. The tubing can be cut with standard scissors or a utility knife before or after shrinking. Cut to your exact length for a clean, professional finish on splices, terminals, and connectors.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003e18mm Heat Shrink Tubing — Reliable Insulation for Automotive \u0026amp; DIY Electrical Projects\u003c\/h2\u003e\n    \u003cp\u003eLoose wire splices, exposed terminals, and unprotected cable ends are a common headache for automotive enthusiasts, electricians, and DIYers alike. Whether you're rewiring a car harness, repairing marine connections, or tidying up a home workshop project, unprotected wires invite corrosion, shorts, and safety hazards. This 18mm heat shrink tubing gives you a fast, clean solution that stays put.\u003c\/p\u003e\n    \u003cp\u003eEach order includes a continuous length of 2:1 ratio polyolefin heat shrink tubing with an inner diameter of 18mm (≈0.71\"). Available in lengths of 1 metre (≈3.3 ft), 2 metres (≈6.6 ft), 5 metres (≈16.4 ft), and 10 metres (≈32.8 ft), and in 7 colors — Black, White, Red, Green, Yellow, Blue, and Transparent — so you can color-code circuits or match your existing wiring scheme.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include automotive wire harness repair, marine and RV electrical connections, battery terminal insulation, and workshop cable management. The 2:1 shrink ratio makes it a go-to choice for anyone searching for \u003cem\u003eheat shrink tubing for car wiring\u003c\/em\u003e or \u003cem\u003eelectrical cable sleeve for DIY projects\u003c\/em\u003e.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e🔌\u003c\/span\u003e\n    \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits wire bundles and connectors up to approximately 17mm in diameter. After shrinking, conforms to cables as small as ~9mm. Suitable for standard automotive, marine, and household electrical wiring applications.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e✅ Key Features of These 18mm Heat Shrink Tubing Sleeves\u003c\/h2\u003e\n  \u003cul class=\"hdiy-features\"\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔥\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e2:1 Shrink Ratio\u003c\/strong\u003e — Shrinks from 18mm (≈0.71\") down to approximately 9mm, creating a tight, uniform sleeve that conforms closely to wire bundles and connectors.\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\u003c\/strong\u003e — Available in Black, White, Red, Green, Yellow, Blue, and Transparent, making it easy to color-code circuits in automotive wiring, control panels, and DIY electrical builds.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMoisture \u0026amp; Abrasion Resistance\u003c\/strong\u003e — Polyolefin construction provides a protective barrier against moisture ingress, minor abrasion, and common automotive fluids — ideal for under-hood and outdoor cable protection.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e✂️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eCut-to-Length Flexibility\u003c\/strong\u003e — Supplied in continuous rolls (1m to 10m), so you can cut exactly what you need for each splice, terminal, or connector without waste.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eElectrical Insulation\u003c\/strong\u003e — Provides a reliable insulating layer over wire splices and exposed conductors, reducing the risk of shorts and signal interference in low-voltage electrical systems.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eLow Activation Temperature\u003c\/strong\u003e — Typically activates at around 70–90°C (158–194°F), compatible with standard heat guns for fast, even shrinkage without scorching surrounding components.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — 18mm 2:1 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\u003eHeat Shrink Tubing\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eInner Diameter (Before Shrink)\u003c\/th\u003e\n\u003ctd\u003e18mm (≈0.71\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eInner Diameter (After Shrink)\u003c\/th\u003e\n\u003ctd\u003e~9mm (≈0.35\") — typically\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eShrink Ratio\u003c\/th\u003e\n\u003ctd\u003e2:1\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003ePolyolefin (typically)\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\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\u003eGenerally ~120°C (248°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\u003eCertifications\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eRecommended Tool\u003c\/th\u003e\n\u003ctd\u003eHeat gun (lighter may cause uneven shrinkage)\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 Specifications such as voltage rating and certifications (UL, RoHS, MIL-SPEC) vary by production batch. If your application requires specific compliance documentation, please contact us 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 length of heat shrink tubing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMeasure the total cable run you need to protect and add 10–15% extra for overlap and trimming. For a single splice, 1 metre is typically sufficient. For wiring harnesses or longer runs, 5 or 10 metre rolls offer better value. Available lengths: 1m (≈3.3 ft), 2m (≈6.6 ft), 5m (≈16.4 ft), 10m (≈32.8 ft).\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat does 2:1 shrink ratio mean?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eA 2:1 shrink ratio means the tubing shrinks to half its original inner diameter when heat is applied. This 18mm tubing will shrink down to approximately 9mm, creating a snug, protective sleeve around your wire or cable.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\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\u003eThis tubing generally activates at around 70–90°C (158–194°F) and fully shrinks at approximately 120°C (248°F). A standard heat gun is recommended. A lighter can work in a pinch but may cause uneven shrinkage or scorching.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan this heat shrink tubing be used outdoors or in automotive applications?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes. Polyolefin heat shrink tubing is generally resistant to moisture, UV exposure, and common automotive fluids, making it suitable for car wiring, marine connections, and outdoor electrical repairs. For harsh chemical environments, confirm compatibility before use.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat wire sizes does 18mm heat shrink tubing fit?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eWith an inner diameter of 18mm (≈0.71\"), this tubing fits wire bundles, connectors, and cable ends up to approximately 17mm in diameter before shrinking. After shrinking, it conforms tightly to cables as small as roughly 9mm. For individual wires, it is typically used for larger gauge cables or grouped wire bundles.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs the tubing RoHS compliant and safe for electrical use?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThis tubing is generally manufactured from polyolefin material, which is commonly RoHS compliant and rated for standard electrical insulation applications. If your project requires specific certifications (UL, CSA, MIL-SPEC), please contact us to confirm before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I cut the tubing to a custom length?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eAbsolutely. The tubing can be cut with standard scissors or a utility knife before or after shrinking. Cut to your exact length for a clean, professional finish on splices, terminals, and connectors.\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 color 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":"Black \/ φ18mm \/ 1 Metre","offer_id":52331112005906,"sku":"GYWXWGLBZSJ000163x1","price":1.89,"currency_code":"USD","in_stock":true},{"title":"White \/ φ18mm \/ 1 Metre","offer_id":52331112038674,"sku":"GYWXWGLBZSJ000164x1","price":2.2,"currency_code":"USD","in_stock":true},{"title":"Red \/ φ18mm \/ 1 Metre","offer_id":52331112071442,"sku":"GYWXWGLBZSJ000165x1","price":2.2,"currency_code":"USD","in_stock":true},{"title":"Green \/ φ18mm \/ 1 Metre","offer_id":52331112104210,"sku":"GYWXWGLBZSJ000166x1","price":2.2,"currency_code":"USD","in_stock":true},{"title":"Yellow \/ φ18mm \/ 1 Metre","offer_id":52331112136978,"sku":"GYWXWGLBZSJ000167x1","price":2.2,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ18mm \/ 1 Metre","offer_id":52331112169746,"sku":"GYWXWGLBZSJ000168x1","price":2.2,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ φ18mm \/ 1 Metre","offer_id":52331112202514,"sku":"GYWXWGLBZSJ000169x1","price":2.2,"currency_code":"USD","in_stock":true},{"title":"Black \/ φ18mm \/ 2 Metre","offer_id":52331112235282,"sku":"GYWXWGLBZSJ000163x2","price":3.05,"currency_code":"USD","in_stock":true},{"title":"White \/ φ18mm \/ 2 Metre","offer_id":52331112268050,"sku":"GYWXWGLBZSJ000164x2","price":3.33,"currency_code":"USD","in_stock":true},{"title":"Red \/ φ18mm \/ 2 Metre","offer_id":52331112300818,"sku":"GYWXWGLBZSJ000165x2","price":3.33,"currency_code":"USD","in_stock":true},{"title":"Green \/ φ18mm \/ 2 Metre","offer_id":52331112333586,"sku":"GYWXWGLBZSJ000166x2","price":3.33,"currency_code":"USD","in_stock":true},{"title":"Yellow \/ φ18mm \/ 2 Metre","offer_id":52331112366354,"sku":"GYWXWGLBZSJ000167x2","price":3.33,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ18mm \/ 2 Metre","offer_id":52331112399122,"sku":"GYWXWGLBZSJ000168x2","price":3.33,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ φ18mm \/ 2 Metre","offer_id":52331112431890,"sku":"GYWXWGLBZSJ000169x2","price":3.33,"currency_code":"USD","in_stock":true},{"title":"Black \/ φ18mm \/ 5 Metre","offer_id":52331112464658,"sku":"GYWXWGLBZSJ000163x5","price":6.5,"currency_code":"USD","in_stock":true},{"title":"White \/ φ18mm \/ 5 Metre","offer_id":52331112497426,"sku":"GYWXWGLBZSJ000164x5","price":7.22,"currency_code":"USD","in_stock":true},{"title":"Red \/ φ18mm \/ 5 Metre","offer_id":52331112530194,"sku":"GYWXWGLBZSJ000165x5","price":7.22,"currency_code":"USD","in_stock":true},{"title":"Green \/ φ18mm \/ 5 Metre","offer_id":52331112562962,"sku":"GYWXWGLBZSJ000166x5","price":7.22,"currency_code":"USD","in_stock":true},{"title":"Yellow \/ φ18mm \/ 5 Metre","offer_id":52331112595730,"sku":"GYWXWGLBZSJ000167x5","price":7.22,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ18mm \/ 5 Metre","offer_id":52331112628498,"sku":"GYWXWGLBZSJ000168x5","price":7.22,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ φ18mm \/ 5 Metre","offer_id":52331112661266,"sku":"GYWXWGLBZSJ000169x5","price":7.22,"currency_code":"USD","in_stock":true},{"title":"Black \/ φ18mm \/ 10 Metre","offer_id":52331112694034,"sku":"GYWXWGLBZSJ000163x10","price":12.27,"currency_code":"USD","in_stock":true},{"title":"White \/ φ18mm \/ 10 Metre","offer_id":52331112726802,"sku":"GYWXWGLBZSJ000164x10","price":13.71,"currency_code":"USD","in_stock":true},{"title":"Red \/ φ18mm \/ 10 Metre","offer_id":52331112759570,"sku":"GYWXWGLBZSJ000165x10","price":13.71,"currency_code":"USD","in_stock":true},{"title":"Green \/ φ18mm \/ 10 Metre","offer_id":52331112792338,"sku":"GYWXWGLBZSJ000166x10","price":13.71,"currency_code":"USD","in_stock":true},{"title":"Yellow \/ φ18mm \/ 10 Metre","offer_id":52331112825106,"sku":"GYWXWGLBZSJ000167x10","price":13.71,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ18mm \/ 10 Metre","offer_id":52331112857874,"sku":"GYWXWGLBZSJ000168x10","price":13.71,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ φ18mm \/ 10 Metre","offer_id":52331112890642,"sku":"GYWXWGLBZSJ000169x10","price":13.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture_3_of_12_00568e93-6d12-4eba-ae2e-e2ac10506a6f.jpg?v=1781016312","url":"https:\/\/homediyer.com\/products\/18mm-heat-shrink-tubing-2-1-wire-wrap","provider":"HomeDIYer","version":"1.0","type":"link"}