{"product_id":"8mm-heat-shrink-tubing-2-1-wire-wrap-sleeve","title":"8mm Heat Shrink Tubing 2:1 Ratio – Electrical Wire Wrap Sleeve, 7 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\": \"What length of heat shrink tubing do I need?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure the section of wire or splice you need to cover, then add at least 10–15mm (≈1\/2\\u201d) of overlap on each end. For most automotive or household wiring jobs, 1m or 2m lengths are sufficient for a single run. Choose 5m or 10m rolls if you have multiple connections or a larger project.\"\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 ratio means the tubing shrinks to approximately half its original inner diameter when heat is applied. This 8mm tubing will typically shrink down to around 4mm, creating a snug, secure fit over the wire or connector.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this heat shrink tubing outdoors or in a vehicle engine bay?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This tubing is generally suitable for automotive wiring, including under-dash and interior applications. For prolonged outdoor or high-heat engine bay exposure, look for tubing rated for higher temperatures or with an adhesive-lined interior for added moisture sealing. Contact us to confirm suitability for your specific environment.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What wire gauge does 8mm heat shrink tubing fit?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"With an 8mm inner diameter before shrinking, this tubing typically fits wire bundles, connectors, or individual cables up to approximately 7–7.5mm in outer diameter. It is commonly used with wire gauges ranging from 10 AWG up to larger multi-wire bundles. Always measure your cable's outer diameter before ordering.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I apply heat shrink tubing correctly?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Slide the tubing over the wire before making your connection. Once the splice or terminal is in place, apply even heat using a heat gun set to 90–120°C (194–248°F), moving it back and forth along the tubing until it shrinks uniformly. Avoid using an open flame, as it can scorch or uneven-shrink the material.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which color should I choose?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Color choice is typically used for wire identification and organization. Common conventions include black for ground wires, red for positive\/power, blue for signal lines, and green or yellow for safety\/earth grounds. Transparent tubing lets you see the wire or label underneath. Choose the color that matches your wiring standard or project needs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this tubing RoHS compliant or halogen-free?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Compliance details vary by production batch. If RoHS compliance or halogen-free certification is required for your application, please contact us to confirm before ordering.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003c!-- ① OVERVIEW --\u003e\n  \u003ch2\u003e8mm Heat Shrink Tubing — Reliable Insulation for Electrical Wire Splices \u0026amp; Connections\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003cp\u003eExposed wire splices, corroded terminals, and unprotected connections are a constant headache for automotive enthusiasts, marine riggers, and home electricians alike. One failed joint can mean a blown fuse, a short circuit, or hours of troubleshooting. This 8mm heat shrink tubing gives hobbyists and professionals a fast, clean way to insulate, seal, and protect electrical connections without tape that unravels or connectors that loosen over time.\u003c\/p\u003e\n    \u003cp\u003eEach order includes a continuous length of 2:1 ratio polyolefin heat shrink tubing with an inner diameter of 8mm (≈5\/16\"). Available in lengths of 1m (≈3.3 ft), 2m (≈6.6 ft), 5m (≈16.4 ft), and 10m (≈32.8 ft), and offered in seven colors — Black, White, Red, Green, Yellow, Blue, and Transparent — so you can color-code your wiring runs or match an existing standard. The 2:1 shrink ratio means the tubing recovers to approximately 4mm inner diameter, forming a firm, uniform sleeve around the wire or connector.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include automotive wire harness repair, marine electrical connections, DIY home wiring projects, RC hobby builds, and workshop tool cord repairs — anywhere you need a clean, durable sleeve for electrical wire insulation and cable management.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ② COMPATIBILITY BAR --\u003e\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 cables up to approximately 7–7.5mm outer diameter. Suitable for use with standard copper wire, stranded wire, and most connector terminals. Works with any heat gun capable of reaching 90–120°C (194–248°F).\n  \u003c\/div\u003e\n\n  \u003c!-- ③ KEY FEATURES --\u003e\n  \u003ch2\u003e✅ Key Features of These 8mm 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 — Recovers from 8mm down to approximately 4mm inner diameter, creating a snug, uniform sleeve that conforms tightly to wires, splices, and connector barrels for secure electrical wire insulation.\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 wiring runs, follow automotive wiring standards, or keep connections visually organized in complex harnesses.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e4 Length Options\u003c\/strong\u003e — Choose from 1m, 2m, 5m, or 10m rolls to match your project scale, whether it's a single splice repair or a full vehicle rewire with multiple heat shrink wire connections.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003ePolyolefin Construction\u003c\/strong\u003e — Made from polyolefin material, which is generally recognized for its flexibility after shrinking, resistance to common automotive fluids, and stable performance across a range of operating temperatures.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e✂️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eEasy to Cut \u0026amp; Apply\u003c\/strong\u003e — Cuts cleanly with standard scissors or a utility knife. Slide over the wire before connecting, then apply even heat with a heat gun — no special tools required for most DIY electrical cable sleeve applications.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔍\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eTransparent Option for Visibility\u003c\/strong\u003e — The clear variant lets you inspect the wire or read labels underneath the sleeve without removing it, useful for quality checks on automotive wiring harness repairs or labeled data cables.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- ④ TECHNICAL SPECIFICATIONS --\u003e\n  \u003ch2\u003e📐 Technical Specifications — 8mm 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\u003e8mm (≈5\/16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eInner Diameter (After Shrink)\u003c\/th\u003e\n\u003ctd\u003eTypically ≈4mm (≈5\/32\") at full recovery\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\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\u003eRecommended Shrink Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically 90–120°C (194–248°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\u003eOperating Temperature Range\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm\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\u003eRoHS \/ Halogen-Free\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eSuitable Applications\u003c\/th\u003e\n\u003ctd\u003eAutomotive wiring, marine electrical, DIY home wiring, hobby electronics, cable management\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 Always measure your cable's outer diameter before ordering. The 8mm inner diameter accommodates cables up to approximately 7–7.5mm OD. For engine bay or prolonged outdoor use, contact us to confirm temperature and environmental ratings.\n  \u003c\/div\u003e\n\n  \u003c!-- ⑤ FAQ --\u003e\n  \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-faq\"\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat length of heat shrink tubing do I need?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMeasure the section of wire or splice you need to cover, then add at least 10–15mm (≈1\/2\") of overlap on each end. For most automotive or household wiring jobs, 1m or 2m lengths are sufficient for a single run. Choose 5m or 10m rolls if you have multiple connections or a larger project — for example, a full vehicle rewire or a workshop with many cable repairs.\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 ratio means the tubing shrinks to approximately half its original inner diameter when heat is applied. This 8mm tubing will typically recover to around 4mm inner diameter, creating a snug, secure fit over the wire or connector. The tighter the fit after shrinking, the better the mechanical protection and insulation.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use this heat shrink tubing outdoors or in a vehicle engine bay?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThis tubing is generally suitable for automotive wiring, including under-dash and interior applications. For prolonged outdoor exposure or high-heat engine bay environments, look for tubing rated for higher temperatures or with an adhesive-lined interior for added moisture sealing. Contact us to confirm suitability for your specific environment before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat wire gauge does 8mm heat shrink tubing fit?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eWith an 8mm inner diameter before shrinking, this tubing typically fits wire bundles, connectors, or individual cables up to approximately 7–7.5mm in outer diameter. It is commonly used with wire gauges ranging from 10 AWG up to larger multi-wire bundles. Always measure your cable's outer diameter before ordering to ensure a proper fit.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I apply heat shrink tubing correctly?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eSlide the tubing over the wire \u003cem\u003ebefore\u003c\/em\u003e making your connection. Once the splice or terminal is in place, apply even heat using a heat gun set to 90–120°C (194–248°F), moving it back and forth along the tubing until it shrinks uniformly. Avoid using an open flame, as it can scorch or unevenly shrink the material and may damage the wire insulation underneath.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhich color should I choose for my wiring project?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eColor choice is typically used for wire identification and organization. Common conventions include black for ground wires, red for positive\/power lines, blue for signal lines, and green or yellow for safety\/earth grounds. Transparent tubing lets you see the wire or read a label underneath without removing the sleeve. Choose the color that matches your wiring standard or project needs.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs this tubing RoHS compliant or halogen-free?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eCompliance details can vary by production batch. If RoHS compliance or halogen-free certification is required for your application — such as in industrial electronics or regulated automotive assemblies — please contact us to confirm before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003c!-- ⑥ CTA BAR --\u003e\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 \/ φ8mm \/ 1 Metre","offer_id":52331128783122,"sku":"GYWXWGLBZSJ000100x1","price":1.35,"currency_code":"USD","in_stock":true},{"title":"White \/ φ8mm \/ 1 Metre","offer_id":52331128815890,"sku":"GYWXWGLBZSJ000101x1","price":1.8,"currency_code":"USD","in_stock":true},{"title":"Red \/ φ8mm \/ 1 Metre","offer_id":52331128848658,"sku":"GYWXWGLBZSJ000102x1","price":1.8,"currency_code":"USD","in_stock":true},{"title":"Green \/ φ8mm \/ 1 Metre","offer_id":52331128881426,"sku":"GYWXWGLBZSJ000103x1","price":1.8,"currency_code":"USD","in_stock":true},{"title":"Yellow \/ φ8mm \/ 1 Metre","offer_id":52331128914194,"sku":"GYWXWGLBZSJ000104x1","price":1.8,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ8mm \/ 1 Metre","offer_id":52331128946962,"sku":"GYWXWGLBZSJ000105x1","price":1.8,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ φ8mm \/ 1 Metre","offer_id":52331128979730,"sku":"GYWXWGLBZSJ000106x1","price":1.8,"currency_code":"USD","in_stock":true},{"title":"Black \/ φ8mm \/ 2 Metre","offer_id":52331129012498,"sku":"GYWXWGLBZSJ000100x2","price":1.92,"currency_code":"USD","in_stock":true},{"title":"White \/ φ8mm \/ 2 Metre","offer_id":52331129045266,"sku":"GYWXWGLBZSJ000101x2","price":1.99,"currency_code":"USD","in_stock":true},{"title":"Red \/ φ8mm \/ 2 Metre","offer_id":52331129078034,"sku":"GYWXWGLBZSJ000102x2","price":1.99,"currency_code":"USD","in_stock":true},{"title":"Green \/ φ8mm \/ 2 Metre","offer_id":52331129110802,"sku":"GYWXWGLBZSJ000103x2","price":1.99,"currency_code":"USD","in_stock":true},{"title":"Yellow \/ φ8mm \/ 2 Metre","offer_id":52331129143570,"sku":"GYWXWGLBZSJ000104x2","price":1.99,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ8mm \/ 2 Metre","offer_id":52331129176338,"sku":"GYWXWGLBZSJ000105x2","price":1.99,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ φ8mm \/ 2 Metre","offer_id":52331129209106,"sku":"GYWXWGLBZSJ000106x2","price":1.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ φ8mm \/ 5 Metre","offer_id":52331129241874,"sku":"GYWXWGLBZSJ000100x5","price":3.4,"currency_code":"USD","in_stock":true},{"title":"White \/ φ8mm \/ 5 Metre","offer_id":52331129274642,"sku":"GYWXWGLBZSJ000101x5","price":3.59,"currency_code":"USD","in_stock":true},{"title":"Red \/ φ8mm \/ 5 Metre","offer_id":52331129307410,"sku":"GYWXWGLBZSJ000102x5","price":3.59,"currency_code":"USD","in_stock":true},{"title":"Green \/ φ8mm \/ 5 Metre","offer_id":52331129340178,"sku":"GYWXWGLBZSJ000103x5","price":3.59,"currency_code":"USD","in_stock":true},{"title":"Yellow \/ φ8mm \/ 5 Metre","offer_id":52331129372946,"sku":"GYWXWGLBZSJ000104x5","price":3.59,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ8mm \/ 5 Metre","offer_id":52331129405714,"sku":"GYWXWGLBZSJ000105x5","price":3.59,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ φ8mm \/ 5 Metre","offer_id":52331129438482,"sku":"GYWXWGLBZSJ000106x5","price":3.59,"currency_code":"USD","in_stock":true},{"title":"Black \/ φ8mm \/ 10 Metre","offer_id":52331129471250,"sku":"GYWXWGLBZSJ000100x10","price":6.07,"currency_code":"USD","in_stock":true},{"title":"White \/ φ8mm \/ 10 Metre","offer_id":52331129504018,"sku":"GYWXWGLBZSJ000101x10","price":6.45,"currency_code":"USD","in_stock":true},{"title":"Red \/ φ8mm \/ 10 Metre","offer_id":52331129536786,"sku":"GYWXWGLBZSJ000102x10","price":6.45,"currency_code":"USD","in_stock":true},{"title":"Green \/ φ8mm \/ 10 Metre","offer_id":52331129569554,"sku":"GYWXWGLBZSJ000103x10","price":6.45,"currency_code":"USD","in_stock":true},{"title":"Yellow \/ φ8mm \/ 10 Metre","offer_id":52331129602322,"sku":"GYWXWGLBZSJ000104x10","price":6.45,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ8mm \/ 10 Metre","offer_id":52331129635090,"sku":"GYWXWGLBZSJ000105x10","price":6.45,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ φ8mm \/ 10 Metre","offer_id":52331129667858,"sku":"GYWXWGLBZSJ000106x10","price":6.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of12_5810ad44-d885-43eb-aeda-dea70c942d4e.jpg?v=1780994755","url":"https:\/\/homediyer.com\/products\/8mm-heat-shrink-tubing-2-1-wire-wrap-sleeve","provider":"HomeDIYer","version":"1.0","type":"link"}