{"product_id":"100mm-2-1-heat-shrink-tubing-large-diameter-electrical-sleeve","title":"100mm 2:1 Heat Shrink Tubing – Large Diameter Electrical Insulation Sleeve (Black \u0026 Transparent)","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 section of cable or bundle you need to cover and add at least 10-15% extra to account for shrinkage along the length. For most applications, 1 meter (approx. 39.4 in) covers a single run, while 2 meters (approx. 78.7 in) suits longer conduit wraps or multiple joints in one 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 diameter when heat is applied. This 100mm tubing will shrink down to roughly 50mm, making it suitable for large cable bundles, conduit ends, and thick wire harnesses.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How strong is the insulation provided by this tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Heat shrink tubing of this type generally provides solid electrical insulation, typically rated for voltages up to 600V in standard polyolefin grades. For exact dielectric ratings, please contact us to confirm the specification for your application.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this heat shrink tubing be used outdoors or in marine environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Standard polyolefin heat shrink tubing is generally moisture-resistant and suitable for protected outdoor use. For fully submersed or harsh marine environments, we recommend confirming the specific grade with us before purchase.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What tools do I need to apply this tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A heat gun is the recommended tool for even, controlled shrinkage. A lighter or torch can work in a pinch but may cause uneven shrinking or scorching on large-diameter tubing like this 100mm sleeve. Keep the heat source moving to avoid hot spots.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the transparent version truly clear after shrinking?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The transparent variant is designed to remain visually clear after shrinking, allowing you to see cable labels, color coding, or connector markings underneath. Clarity may vary slightly depending on heat application technique.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What cable or conduit sizes does 100mm heat shrink tubing fit?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This tubing fits cables and bundles with an outer diameter of up to approximately 100mm (approx. 3.94 in) before shrinking. After full shrinkage at 2:1 ratio, it conforms to diameters down to roughly 50mm (approx. 1.97 in). Always measure your bundle diameter before ordering.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003e100mm Heat Shrink Tubing — Reliable Large-Diameter Insulation for Cables \u0026amp; Wire Bundles\u003c\/h2\u003e\n    \u003cp\u003eWhen you're working with thick cable bundles, conduit terminations, or large wire harnesses, standard heat shrink just doesn't cut it. Electricians, marine riggers, automotive builders, and serious DIYers all run into the same problem: finding a large-diameter heat shrink sleeve that actually fits, shrinks evenly, and holds up over time. This 100mm 2:1 heat shrink tubing is built for exactly those situations.\u003c\/p\u003e\n    \u003cp\u003eEach piece is a single continuous sleeve of polyolefin heat shrink tubing with a 2:1 shrink ratio — meaning it shrinks from 100mm (approx. 3.94\") down to approximately 50mm (approx. 1.97\") when heat is applied. Available in Black and Transparent finishes, sold in 1 Meter (approx. 39.4\") and 2 Meter (approx. 78.7\") lengths so you can match the quantity to your project without waste.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include protecting large cable bundle joints in electrical panels, sealing conduit ends on outdoor wiring runs, covering battery terminal connections in RV and marine builds, and insulating thick wire harnesses in automotive or industrial applications — all scenarios where a large diameter heat shrink sleeve for wire bundles is the right call.\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 cable and bundle outer diameters up to 100mm (approx. 3.94\"). Shrinks to approximately 50mm (approx. 1.97\") at full 2:1 ratio. Suitable for polyolefin-compatible heat gun application. Confirm bundle diameter before ordering.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e✅ Key Features of These 100mm 2:1 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\u003eTrue 100mm Pre-Shrink Diameter\u003c\/strong\u003e — Sized to slip over large cable bundles, conduit ends, and thick wire harnesses without forcing or stretching.\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 for Secure Fit\u003c\/strong\u003e — Shrinks evenly to roughly half its diameter, conforming tightly around irregular bundle shapes for a clean, professional finish.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eElectrical Insulation Sleeve Performance\u003c\/strong\u003e — Polyolefin construction provides solid dielectric protection, keeping moisture and abrasion away from exposed conductors and connection points.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎨\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eTwo Finish Options: Black \u0026amp; Transparent\u003c\/strong\u003e — Black for UV-resistant outdoor runs and clean panel work; transparent so cable labels and color coding remain visible after installation.\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 — Available in 1m and 2m lengths, easily cut with scissors or a utility knife so you use exactly what you need for each joint or run.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌡\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eHeat Gun Compatible\u003c\/strong\u003e — Designed for controlled heat gun application, allowing even shrinkage across the full 100mm diameter without scorching or uneven pull-back.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cdiv class=\"hdiy-note\"\u003e\n    \u003cspan class=\"hdiy-note-icon\"\u003e⚠\u003c\/span\u003e\n    \u003cstrong\u003eSpec Note:\u003c\/strong\u003e Exact voltage rating and temperature range vary by production batch. If your application requires certified dielectric specs (e.g., UL, RoHS), please contact us to confirm before ordering.\n  \u003c\/div\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — Large Diameter 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 \/ Electrical Insulation Sleeve\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePre-Shrink Diameter\u003c\/th\u003e\n\u003ctd\u003e100mm (approx. 3.94\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePost-Shrink Diameter (min.)\u003c\/th\u003e\n\u003ctd\u003eApproximately 50mm (approx. 1.97\") at full 2:1 ratio\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 Lengths\u003c\/th\u003e\n\u003ctd\u003e1 Meter (approx. 39.4\") \/ 2 Meter (approx. 78.7\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eAvailable Colors\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\u003ePolyolefin (generally)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eVoltage Rating\u003c\/th\u003e\n\u003ctd\u003eSee variant options — contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003eSee variant options — contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eShrink Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically 90°C–120°C (194°F–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 — contact us to confirm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eApplication Tool\u003c\/th\u003e\n\u003ctd\u003eHeat gun (recommended)\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      \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 length of heat shrink tubing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMeasure the section of cable or bundle you need to cover and add at least 10–15% extra to account for shrinkage along the length. For most applications, 1 meter (approx. 39.4\") covers a single run, while 2 meters (approx. 78.7\") suits longer conduit wraps or multiple joints in one project.\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 diameter when heat is applied. This 100mm tubing will shrink down to roughly 50mm (approx. 1.97\"), making it suitable for large cable bundles, conduit ends, and thick wire harnesses.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow strong is the insulation provided by this tubing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eHeat shrink tubing of this type generally provides solid electrical insulation, typically rated for voltages up to 600V in standard polyolefin grades. For exact dielectric ratings specific to this product, please contact us to confirm before use in safety-critical applications.\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 marine environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eStandard polyolefin heat shrink tubing is generally moisture-resistant and suitable for protected outdoor use. For fully submersed or harsh marine environments, we recommend confirming the specific grade with us before purchase. The black variant typically offers better UV resistance than the transparent option.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat tools do I need to apply this tubing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eA heat gun is the recommended tool for even, controlled shrinkage across a large-diameter sleeve like this. A lighter or torch can work in a pinch but may cause uneven shrinking or scorching on 100mm tubing. Keep the heat source moving in a slow, sweeping motion to avoid hot spots.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs the transparent version truly clear after shrinking?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThe transparent variant is designed to remain visually clear after shrinking, allowing you to see cable labels, color coding, or connector markings underneath. Clarity may vary slightly depending on heat application technique — even, moderate heat generally produces the clearest result.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat cable or conduit sizes does 100mm heat shrink tubing fit?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThis tubing fits cables and bundles with an outer diameter of up to approximately 100mm (approx. 3.94\") before shrinking. After full shrinkage at 2:1 ratio, it conforms to diameters down to roughly 50mm (approx. 1.97\"). Always measure your bundle's outer diameter before ordering to ensure a proper fit.\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 \u003cstrong\u003ecolor and length\u003c\/strong\u003e above, then add to cart — ships from our US warehouse.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"Black \/ 1 Meter","offer_id":52330951442706,"sku":"GLFBFHHGLBZSJ000255x1","price":40.38,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ 1 Meter","offer_id":52330951475474,"sku":"GLFBFHHGLBZSJ000256x1","price":41.81,"currency_code":"USD","in_stock":true},{"title":"Black \/ 2 Meter","offer_id":52330951508242,"sku":"GLFBFHHGLBZSJ000255x2","price":86.97,"currency_code":"USD","in_stock":true},{"title":"Transparent \/ 2 Meter","offer_id":52330951541010,"sku":"GLFBFHHGLBZSJ000256x2","price":89.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-02_5c7f6d20-8724-4e92-a9a1-57ef8d3d45db.jpg?v=1780986392","url":"https:\/\/homediyer.com\/products\/100mm-2-1-heat-shrink-tubing-large-diameter-electrical-sleeve","provider":"HomeDIYer","version":"1.0","type":"link"}