{"product_id":"large-diameter-heat-shrink-tubing-90mm-210mm-2-1-cable-wire","title":"Large Diameter Heat Shrink Tubing 2:1 — φ90mm to φ210mm for Cable \u0026 Wire","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 cable or pipe?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure the outer diameter of your cable bundle or pipe. Choose a heat shrink size where the expanded inner diameter is at least 10–20% larger than your bundle. With a 2:1 shrink ratio, the tubing will shrink to approximately half its listed diameter. For example, φ100mm tubing will shrink down to approximately φ50mm after heat is applied.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the shrink ratio of this tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This heat shrink tubing has a 2:1 shrink ratio, meaning it shrinks to approximately half its original expanded diameter when heat is applied evenly. The listed diameter (φ) is the pre-shrink expanded size.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this large bore heat shrink tubing be used outdoors?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This tubing is generally suitable for light outdoor use, providing moisture resistance and UV protection for cable bundles and pipe joints. For long-term outdoor or direct burial applications, additional weatherproofing measures are typically recommended.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What tool do I need to shrink this large diameter tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A heat gun is strongly recommended for large diameter heat shrink tubing. Apply heat evenly in a sweeping motion along the length of the tubing to avoid uneven shrinkage or scorching. Open flames are not recommended for large bore sizes as they can cause uneven shrinkage and surface damage.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between Black and Transparent variants?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Black variant provides full coverage and UV protection, making it ideal for outdoor cable management and applications where a clean, finished appearance is needed. The Transparent variant allows you to see the underlying cable markings, labels, or connections through the tubing, which is useful for inspection and identification purposes.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What applications is this large heat shrink tubing suitable for?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This large bore heat shrink tubing is typically used for bundling and insulating large cable harnesses, protecting pipe joints and conduit ends, covering and sealing wire splices on marine and automotive wiring, and providing strain relief on heavy-duty electrical connections. It is generally suitable for industrial, marine, automotive, and DIY electrical applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How much tubing do I need for my project?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Each listing provides 1 meter (≈39.4 inches) of tubing. For most cable end-sealing or joint-covering applications, 100–300mm of tubing per joint is typically sufficient. For longer runs or full cable harness coverage, calculate the total length needed and order accordingly. Adding 10–15% extra is generally recommended to account for trimming and positioning.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eLarge Diameter Heat Shrink Tubing — Reliable Insulation \u0026amp; Protection for Big Cable Bundles\u003c\/h2\u003e\n    \u003cp\u003eWhen standard heat shrink tubing simply isn't wide enough, electricians, marine riggers, automotive technicians, and industrial DIYers need a large bore heat shrink solution that can handle thick cable bundles, pipe joints, and heavy-duty wire harnesses. This large diameter heat shrink tubing covers the gap between standard sizes and industrial sleeving, offering a clean, professional finish on oversized applications.\u003c\/p\u003e\n    \u003cp\u003eEach order provides 1 meter (≈39.4\") of tubing in your chosen diameter — available in φ90mm (≈3.5\"), φ100mm (≈3.9\"), φ120mm (≈4.7\"), φ150mm (≈5.9\"), φ180mm (≈7.1\"), and φ210mm (≈8.3\"). The 2:1 shrink ratio means each size shrinks to approximately half its listed diameter after heat is applied. Choose between Black for full coverage and UV resistance, or Transparent to keep cable markings and labels visible after installation.\u003c\/p\u003e\n    \u003cp\u003eTypical applications include sealing and insulating large cable harness ends in marine and automotive wiring, covering pipe joints and conduit terminations in industrial installations, and providing strain relief and moisture protection on heavy-duty electrical splices. The transparent variant is especially useful for large wire bundle identification in control panels and junction boxes.\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 The listed diameter (φ) is the expanded pre-shrink inner diameter. With a 2:1 ratio, the tubing shrinks to approximately half that diameter. Select a size where the expanded φ is at least 10–20% larger than your cable bundle or pipe outer diameter.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-note\"\u003e\n    \u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e\n    \u003cstrong\u003eApplication note:\u003c\/strong\u003e A heat gun is required for even shrinkage on large bore sizes. Open flames are not recommended. If your bundle diameter falls between two sizes, always size up. Contact us to confirm suitability for non-standard applications.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e✅ Key Features of These Large Diameter 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\u003eSix Large Bore Sizes\u003c\/strong\u003e — Diameters from φ90mm (≈3.5\") to φ210mm (≈8.3\") cover large cable bundles, pipe joints, and conduit ends 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 — Shrinks to approximately half its expanded diameter with even heat gun application, conforming tightly to irregular bundle shapes for a secure, wrinkle-free finish on large wire harnesses.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎨\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eBlack \u0026amp; Transparent Options\u003c\/strong\u003e — Black provides UV resistance and a clean finished look for outdoor cable management; Transparent allows cable labels and markings to remain visible through the tubing after installation.\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 — The tubing wall provides a protective barrier against moisture ingress, dust, and mechanical abrasion, extending the service life of covered cable joints and pipe terminations.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eElectrically Insulating\u003c\/strong\u003e — Suitable for insulating large cable splices and wire bundle ends in automotive, marine, and industrial electrical applications where reliable dielectric protection is needed.\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 Convenience\u003c\/strong\u003e — Supplied in 1-meter lengths so you can cut exactly what you need for each joint or cable end, minimizing waste on large bore heat shrink projects.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — Large Bore Heat Shrink Tubing\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\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 Diameters (Expanded)\u003c\/th\u003e\n\u003ctd\u003eφ90mm (≈3.5\"), φ100mm (≈3.9\"), φ120mm (≈4.7\"), φ150mm (≈5.9\"), φ180mm (≈7.1\"), φ210mm (≈8.3\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLength per Unit\u003c\/th\u003e\n\u003ctd\u003e1 Meter (≈39.4\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eColor Options\u003c\/th\u003e\n\u003ctd\u003eBlack, Transparent\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eSee variant options (typically polyolefin-based PVC)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWall Thickness (Pre-Shrink)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eRecommended Application Tool\u003c\/th\u003e\n\u003ctd\u003eHeat gun\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\u003eTypical Applications\u003c\/th\u003e\n\u003ctd\u003eCable bundling, pipe joint insulation, wire harness protection, marine \u0026amp; automotive wiring\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eUV Resistance\u003c\/th\u003e\n\u003ctd\u003eBlack variant — generally UV resistant; Transparent — contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-faq\"\u003e\n    \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right diameter for my cable or pipe?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMeasure the outer diameter of your cable bundle or pipe. Choose a heat shrink size where the expanded inner diameter (φ) is at least 10–20% larger than your bundle's widest point. With a 2:1 shrink ratio, the tubing will shrink to approximately half its listed diameter after heat is applied. For example, φ100mm (≈3.9\") tubing will shrink down to approximately φ50mm (≈2\"). When in doubt, size up — a slightly oversized tube will still shrink down tightly.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the shrink ratio of this tubing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThis large bore heat shrink tubing has a 2:1 shrink ratio, meaning it shrinks to approximately half its original expanded diameter when heat is applied evenly with a heat gun. The listed diameter (φ) is the pre-shrink expanded size. Always account for this ratio when selecting the correct size for your application.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan this large bore heat shrink tubing be used outdoors?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThis tubing is generally suitable for light outdoor use, providing moisture resistance and protection for cable bundles and pipe joints. The Black variant typically offers better UV resistance for prolonged outdoor exposure. For long-term outdoor, direct burial, or submersion applications, additional weatherproofing measures are generally recommended. Contact us to confirm suitability for your specific outdoor environment.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat tool do I need to shrink this large diameter tubing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eA heat gun is strongly recommended for large diameter heat shrink tubing. Apply heat evenly in a slow, sweeping motion along the length of the tubing, working from the center outward to avoid trapping air bubbles. Open flames such as lighters or torches are not recommended for large bore sizes as they can cause uneven shrinkage, scorching, or surface damage. A heat gun with adjustable temperature settings gives the best control.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the difference between Black and Transparent variants?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThe Black variant provides full coverage and generally better UV resistance, making it ideal for outdoor cable management, automotive underhood wiring, and applications where a clean, finished appearance is needed. The Transparent variant allows you to see the underlying cable markings, color codes, labels, or connections through the tubing after installation, which is useful for inspection, troubleshooting, and identification in control panels or junction boxes.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat applications is this large heat shrink tubing suitable for?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThis large bore heat shrink tubing is typically used for bundling and insulating large cable harnesses in marine, automotive, and industrial settings; covering and sealing pipe joints and conduit terminations; providing strain relief on heavy-duty electrical splices; and protecting wire bundle ends from moisture and abrasion. It is generally suitable for any application where standard heat shrink sizes are too small to cover the bundle or fitting.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow much tubing do I need for my project?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eEach listing provides 1 meter (≈39.4\") of tubing. For most cable end-sealing or joint-covering applications, 100–300mm (4\"–12\") of tubing per joint is typically sufficient. For longer runs or full cable harness coverage, calculate the total length needed before ordering. Adding 10–15% extra is generally recommended to account for trimming, positioning, and any re-application if needed.\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 color above, then add to cart — ships from our US warehouse.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"φ90mm \/ Black \/ 1M","offer_id":52330626384146,"sku":"GLFBDMHGLBZSJ000254x1","price":22.71,"currency_code":"USD","in_stock":true},{"title":"φ100mm \/ Black \/ 1M","offer_id":52330626416914,"sku":"GLFBDMHGLBZSJ000255x1","price":24.25,"currency_code":"USD","in_stock":true},{"title":"φ100mm \/ Transparent \/ 1M","offer_id":52330626449682,"sku":"GLFBDMHGLBZSJ000256x1","price":25.27,"currency_code":"USD","in_stock":true},{"title":"φ120mm \/ Black \/ 1M","offer_id":52330626482450,"sku":"GLFBDMHGLBZSJ000257x1","price":29.85,"currency_code":"USD","in_stock":true},{"title":"φ120mm \/ Transparent \/ 1M","offer_id":52330626515218,"sku":"GLFBDMHGLBZSJ000258x1","price":34.94,"currency_code":"USD","in_stock":true},{"title":"φ150mm \/ Black \/ 1M","offer_id":52330626547986,"sku":"GLFBDMHGLBZSJ000259x1","price":36.49,"currency_code":"USD","in_stock":true},{"title":"φ150mm \/ Transparent \/ 1M","offer_id":52330626580754,"sku":"GLFBDMHGLBZSJ000260x1","price":41.06,"currency_code":"USD","in_stock":true},{"title":"φ180mm \/ Black \/ 1M","offer_id":52330626613522,"sku":"GLFBDMHGLBZSJ000261x1","price":55.87,"currency_code":"USD","in_stock":true},{"title":"φ210mm \/ Black \/ 1M","offer_id":52330626646290,"sku":"GLFBDMHGLBZSJ000263x1","price":72.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture4of6_dfe9b3c5-2653-4122-8652-8f5c9368baff.jpg?v=1780903467","url":"https:\/\/homediyer.com\/products\/large-diameter-heat-shrink-tubing-90mm-210mm-2-1-cable-wire","provider":"HomeDIYer","version":"1.0","type":"link"}