{"product_id":"black-heat-shrink-tubing-2-1-ratio-60mm-180mm-1-meter","title":"Black Heat Shrink Tubing 2:1 Ratio — 60mm to 180mm Diameter, 1 Meter Length","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 heat shrink tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure the outer diameter of the cable or bundle you need to cover. Choose a heat shrink tube with a recovered (after-shrink) diameter slightly smaller than your cable's OD. With a 2:1 ratio, the tube shrinks to approximately half its listed diameter — for example, a 60mm tube recovers to roughly 30mm. When in doubt, size up to ensure the tube slides on easily before shrinking.\"\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 will shrink to approximately half its original supplied diameter when heat is applied. For example, a 100mm (≈3.9\\u2033) tube will recover to roughly 50mm (≈2.0\\u2033). This ratio is generally suitable for most standard wire bundling and insulation applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What temperature is needed to shrink this tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Most standard 2:1 polyolefin heat shrink tubing typically activates at around 90°C (194°F) and fully recovers at approximately 120°C (248°F). A heat gun is the recommended tool. Avoid open flames, as uneven heat can cause irregular shrinkage or damage the tubing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this heat shrink tubing suitable for outdoor use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Standard polyolefin heat shrink tubing generally offers good resistance to UV exposure, moisture, and mild chemicals, making it suitable for many outdoor applications. However, for prolonged submersion or extreme outdoor environments, an adhesive-lined (dual-wall) variant is typically recommended for a watertight seal. Contact us to confirm suitability for your specific application.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the voltage rating of this tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Standard 2:1 polyolefin heat shrink tubing is generally rated for up to 600V. This makes it suitable for most low-voltage electrical wiring, automotive harnesses, and marine cable protection. Contact us to confirm the exact rating for your specific use case.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this tubing to bundle multiple wires together?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The large diameter range (60mm–180mm) makes this tubing well-suited for bundling multiple wires or cable looms together. Measure the total outer diameter of the bundle and select a tube size that, after shrinking, will hold the bundle snugly. The 2:1 ratio gives you a reliable, firm grip on the bundle.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the black color affect performance?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The black color is a standard choice for heat shrink tubing and generally provides slightly better UV resistance compared to clear or light-colored variants. It also gives a clean, professional appearance for automotive, industrial, and electrical installations.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003c!-- ① OVERVIEW --\u003e\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eBlack Heat Shrink Tubing 2:1 — Reliable Wire \u0026amp; Cable Protection in Large Diameters\u003c\/h2\u003e\n    \u003cp\u003eWhether you're routing a thick automotive wiring harness, protecting marine cable bundles, or insulating large industrial conductors, finding heat shrink tubing that actually fits oversized cables is a real challenge. This black heat shrink tubing is designed for electricians, automotive technicians, marine riggers, and serious DIYers who need dependable insulation and strain relief on cables and bundles from 60mm up to 180mm in diameter.\u003c\/p\u003e\n    \u003cp\u003eEach listing covers 1 meter (≈39.4\") of tubing in your selected diameter — available in 60mm (≈2.4\"), 70mm (≈2.8\"), 80mm (≈3.1\"), 90mm (≈3.5\"), 100mm (≈3.9\"), 120mm (≈4.7\"), 150mm (≈5.9\"), and 180mm (≈7.1\") supplied diameters. The 2:1 shrink ratio means each tube recovers to approximately half its listed diameter when heat is applied, creating a firm, conforming sleeve around your cable or bundle. Material is standard polyolefin — flexible, lightweight, and resistant to moisture, mild chemicals, and abrasion.\u003c\/p\u003e\n    \u003cp\u003eTypical applications include large-diameter wire loom bundling for automotive and RV builds, cable jacket repair and strain relief on marine and outdoor electrical runs, and protective sleeving for industrial conduit transitions and panel wiring — all scenarios where a long-tail search for \u003cem\u003elarge diameter heat shrink tubing for wire bundles\u003c\/em\u003e or \u003cem\u003eblack heat shrink sleeve for cable loom\u003c\/em\u003e leads you here.\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\"\u003eℹ️\u003c\/span\u003e\n    \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits cables and bundles with an outer diameter up to the listed size. Recovered (after-shrink) inner diameter is approximately 50% of the supplied diameter. Suitable for standard low-voltage electrical, automotive, marine, and industrial wiring applications. Verify your cable OD before ordering.\n  \u003c\/div\u003e\n\n  \u003c!-- ③ KEY FEATURES --\u003e\n  \u003ch2\u003e✅ Key Features of These Black 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\u003eWide Diameter Range\u003c\/strong\u003e — Available in 8 sizes from 60mm to 180mm (≈2.4\"–7.1\"), covering large cable bundles and oversized conductors that standard heat shrink tubing cannot accommodate.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔥\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e2:1 Shrink Ratio\u003c\/strong\u003e — Recovers to approximately half the supplied diameter, delivering a snug, conforming fit around wire bundles, connectors, and cable looms for secure strain relief.\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 — Flexible polyolefin material resists moisture, mild chemicals, and abrasion, making it a dependable choice for automotive wiring harness protection and outdoor cable sleeving.\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 dielectric insulation suitable for low-voltage wiring applications, helping prevent short circuits and protecting exposed conductors in panel builds and junction boxes.\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; shrinks evenly with a heat gun, making it straightforward to use for marine cable repair or RV wiring projects without specialized tools.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎨\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eClean Black Finish\u003c\/strong\u003e — The matte black color provides a professional appearance in automotive, industrial, and electrical installations, and generally offers better UV resistance than clear or light-colored sleeving.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- ④ TECHNICAL SPECIFICATIONS --\u003e\n  \u003ch2\u003e📐 Technical Specifications — Black 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 \/ Heat Shrink Sleeve\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eBlack\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\u003eAvailable Supplied Diameters\u003c\/th\u003e\n\u003ctd\u003e60mm (≈2.4\"), 70mm (≈2.8\"), 80mm (≈3.1\"), 90mm (≈3.5\"), 100mm (≈3.9\"), 120mm (≈4.7\"), 150mm (≈5.9\"), 180mm (≈7.1\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eRecovered Diameter (approx.)\u003c\/th\u003e\n\u003ctd\u003e~50% of supplied diameter (e.g., 100mm → ~50mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLength per Piece\u003c\/th\u003e\n\u003ctd\u003e1 Meter (≈39.4\")\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\u003eShrink Temperature (typical)\u003c\/th\u003e\n\u003ctd\u003e~120°C (248°F) full recovery\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eVoltage Rating (typical)\u003c\/th\u003e\n\u003ctd\u003eUp to 600V (contact us to confirm for your application)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eRecommended Tool\u003c\/th\u003e\n\u003ctd\u003eHeat gun (open flame not recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eQuantity per Order\u003c\/th\u003e\n\u003ctd\u003e1 piece (1 meter length) per variant selected\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eAdhesive Lined\u003c\/th\u003e\n\u003ctd\u003eNo — standard single-wall tubing (see variant options for alternatives)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\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\u003eHow do I choose the right diameter for my heat shrink tubing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMeasure the outer diameter (OD) of the cable or bundle you need to cover. Choose a heat shrink tube with a recovered (after-shrink) diameter slightly smaller than your cable's OD. With a 2:1 ratio, the tube shrinks to approximately half its listed diameter — for example, a 60mm (≈2.4\") tube recovers to roughly 30mm (≈1.2\"). When in doubt, size up to ensure the tube slides on easily before shrinking.\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 will shrink to approximately half its original supplied diameter when heat is applied. For example, a 100mm (≈3.9\") tube will recover to roughly 50mm (≈2.0\"). This ratio is generally suitable for most standard wire bundling, insulation, and cable loom sleeving applications.\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\u003eStandard 2:1 polyolefin heat shrink tubing typically activates at around 90°C (194°F) and fully recovers at approximately 120°C (248°F). A heat gun is the recommended tool for even, controlled shrinkage. Avoid open flames, as uneven heat can cause irregular shrinkage or damage the tubing surface.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs this heat shrink tubing suitable for outdoor or marine use?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eStandard polyolefin heat shrink tubing generally offers good resistance to UV exposure, moisture, and mild chemicals, making it suitable for many outdoor and marine cable protection applications. However, for prolonged submersion or extreme environments, an adhesive-lined (dual-wall) variant is typically recommended for a watertight seal. Contact us to confirm suitability for your specific application.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the voltage rating of this tubing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eStandard 2:1 polyolefin heat shrink tubing is generally rated for up to 600V, making it suitable for most low-voltage electrical wiring, automotive harnesses, and marine cable protection. Contact us to confirm the exact rating for your specific use case before use in safety-critical applications.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use this tubing to bundle multiple wires together?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes. The large diameter range (60mm–180mm) makes this tubing well-suited for bundling multiple wires or cable looms together. Measure the total outer diameter of the bundle and select a tube size that, after shrinking, will hold the bundle snugly. The 2:1 ratio gives you a reliable, firm grip on the bundle for clean automotive wiring harness builds or RV cable management.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDoes the black color affect performance compared to other colors?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThe black color is a standard choice for heat shrink tubing and generally provides slightly better UV resistance compared to clear or light-colored variants. It also gives a clean, professional appearance for automotive, industrial, and electrical installations where aesthetics matter alongside function.\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 cable or bundle before making any connections (if possible). Position it over the area to be covered. Apply heat evenly along the length of the tube using a heat gun, moving in a slow, sweeping motion. The tubing will begin to shrink within seconds. Work from the center outward to avoid trapping air bubbles. Allow to cool before handling.\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 diameter above, then add to cart — ships from our US warehouse.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"60mm \/ Black \/ 1 Meter","offer_id":52330409230610,"sku":"XU0004-0","price":13.59,"currency_code":"USD","in_stock":true},{"title":"70mm \/ Black \/ 1 Meter","offer_id":52330409263378,"sku":"XU0004-1","price":14.04,"currency_code":"USD","in_stock":true},{"title":"80mm \/ Black \/ 1 Meter","offer_id":52330409296146,"sku":"XU0004-2","price":14.48,"currency_code":"USD","in_stock":true},{"title":"90mm \/ Black \/ 1 Meter","offer_id":52330409328914,"sku":"XU0004-3","price":17.67,"currency_code":"USD","in_stock":true},{"title":"100mm \/ Black \/ 1 Meter","offer_id":52330409361682,"sku":"XU0004-4","price":19.31,"currency_code":"USD","in_stock":true},{"title":"120mm \/ Black \/ 1 Meter","offer_id":52330409394450,"sku":"XU0004-5","price":24.14,"currency_code":"USD","in_stock":true},{"title":"150mm \/ Black \/ 1 Meter","offer_id":52330409427218,"sku":"XU0004-6","price":27.19,"currency_code":"USD","in_stock":true},{"title":"180mm \/ Black \/ 1 Meter","offer_id":52330409459986,"sku":"XU0004-7","price":40.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture1of2_c1ae0e4d-a999-4d84-9f91-6710b0f35b26.jpg?v=1780827791","url":"https:\/\/homediyer.com\/products\/black-heat-shrink-tubing-2-1-ratio-60mm-180mm-1-meter","provider":"HomeDIYer","version":"1.0","type":"link"}