{"product_id":"blue-silicone-heat-shrink-tubing-flexible-high-temp","title":"Blue Silicone Heat Shrink Tubing — Flexible, High-Temp Resistant, φ1mm–φ12mm","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 wires?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Generally, select a tube with an inner diameter that is 20-30% larger than the outer diameter of the wire or component you want to cover. For example, for a 2mm wire, a ph3mm tube typically provides a snug fit after shrinking. When in doubt, size up.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What temperature does this silicone heat shrink tubing withstand?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Silicone heat shrink tubing generally withstands continuous operating temperatures in the range of -60C to +200C (-76F to +392F), suitable for engine bays, industrial equipment, and LED lighting assemblies.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this tubing be used outdoors or in wet environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Silicone is inherently resistant to moisture, UV exposure, and mild chemicals, making it suitable for outdoor wiring protection and marine applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the shrink ratio of this tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This silicone heat shrink tubing typically has a 2:1 shrink ratio, meaning it shrinks to approximately half its original inner diameter when heat is applied.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What tool should I use to shrink this tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A heat gun is the recommended tool. A temperature setting of 120C-150C (250F-300F) is generally sufficient. Avoid open flames.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this tubing electrically insulating?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Silicone is an excellent electrical insulator, commonly used in wire harnessing and connector protection. Suitable for low-to-medium voltage applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I cut the tubing cleanly?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Use sharp scissors or a utility knife on a flat surface. For very small diameters (1mm-2mm), micro scissors or precision wire cutters work best.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eBlue Silicone Heat Shrink Tubing — Flexible Protection for Wires, Cables \u0026amp; DIY Builds\u003c\/h2\u003e\n\u003cp\u003eTangled, exposed, or poorly insulated wiring is one of the most common headaches for electronics hobbyists, automotive DIYers, and workshop professionals alike. Whether you are tidying up a home automation project, protecting connections in an engine bay, or finishing off a custom LED build, having the right heat shrink tubing on hand makes all the difference. This blue silicone heat shrink tubing is designed for builders who need reliable, flexible insulation that holds up under real-world conditions.\u003c\/p\u003e\n\u003cp\u003eEach order is sold by the meter in a single continuous length. The tubing is made from flexible silicone rubber and is available in diameters from φ1mm (approx. 3\/64\") to φ12mm (approx. 15\/32\"), with length options of 1 meter (approx. 39.4\"), 3 meters (approx. 9.8 ft), 5 meters (approx. 16.4 ft), and 10 meters (approx. 32.8 ft). The blue color provides easy visual identification in multi-wire assemblies. Shrink ratio is typically 2:1.\u003c\/p\u003e\n\u003cp\u003eCommon use cases include wire harness insulation for automotive and motorcycle wiring, connector and terminal protection in electronics repair, cable management in 3D printers and CNC machines, and strain relief for DIY audio cables and speaker wiring. The flexibility of silicone makes it especially well-suited for applications where the tubing must bend repeatedly without cracking.\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 Works with copper, aluminum, and stranded wire. Suitable for low-to-medium voltage insulation applications. Select a diameter 20-30% larger than your wire outer diameter for a proper recovered fit.\n\u003c\/div\u003e\n\n\u003ch2\u003e✅ Key Features of These Blue Silicone 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\u003eHigh-Temperature Silicone Material\u003c\/strong\u003e — Withstands continuous operating temperatures typically from -60°C to +200°C (-76°F to +392°F), making it suitable for engine bays, industrial wiring, and high-temp LED assemblies.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔵\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eConsistent Blue Color Coding\u003c\/strong\u003e — The uniform blue finish makes it easy to color-code wire harnesses and multi-conductor assemblies, reducing wiring errors during installation and maintenance.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eWide Diameter Range (φ1mm–φ12mm)\u003c\/strong\u003e — Covers everything from fine gauge signal wires to larger power cables, so you can use one product family across your entire project without sourcing multiple SKUs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌊\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMoisture and UV Resistant\u003c\/strong\u003e — Silicone rubber naturally resists water ingress, UV degradation, and mild chemical exposure, making this tubing a dependable choice for outdoor wiring protection and marine cable management.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFlexible After Shrinking\u003c\/strong\u003e — Unlike polyolefin alternatives, silicone remains soft and pliable after heat is applied, so it will not crack or stiffen in cold environments or high-flex routing paths.\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 — Available in 1m, 3m, 5m, and 10m continuous lengths, so you can cut exactly what you need for each connection without waste — ideal for both one-off repairs and production runs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e📐 Technical Specifications — Silicone Heat Shrink Tubing\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eFlexible silicone rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Diameters\u003c\/th\u003e\n\u003ctd\u003eφ1mm, φ1.5mm, φ2mm, φ3mm, φ3.5mm, φ4mm, φ5mm, φ6mm, φ8mm, φ10mm, φ12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Lengths\u003c\/th\u003e\n\u003ctd\u003e1m (approx. 39.4\"), 3m (approx. 9.8 ft), 5m (approx. 16.4 ft), 10m (approx. 32.8 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShrink Ratio\u003c\/th\u003e\n\u003ctd\u003eTypically 2:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically -60°C to +200°C (-76°F to +392°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShrink Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically 120°C–150°C (248°F–302°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eElectrical Insulation\u003c\/th\u003e\n\u003ctd\u003eYes — suitable for low-to-medium voltage applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUV and Moisture Resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlexibility After Shrink\u003c\/th\u003e\n\u003ctd\u003eRemains flexible (silicone does not harden)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Application Tool\u003c\/th\u003e\n\u003ctd\u003eHeat gun (open flame not recommended)\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 for safety-critical use\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 Exact voltage ratings and wall thickness vary by diameter. If your application is safety-critical or involves high-voltage systems, please contact us to confirm specifications 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 diameter for my wires?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eGenerally, select a tube with an inner diameter that is 20–30% larger than the outer diameter of the wire or component you want to cover. For example, for a 2mm wire, a φ3mm tube typically provides a snug fit after shrinking. When in doubt, size up — you can always apply more heat to tighten the fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat temperature does this silicone heat shrink tubing withstand?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSilicone heat shrink tubing generally withstands continuous operating temperatures in the range of -60°C to +200°C (-76°F to +392°F). This makes it suitable for high-temperature environments such as engine bays, industrial equipment, and LED lighting assemblies. Confirm exact ratings if your application is safety-critical.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan this tubing be used outdoors or in wet environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Silicone is inherently resistant to moisture, UV exposure, and mild chemicals, making it a solid choice for outdoor wiring protection and marine applications. For fully submerged or high-pressure water environments, we recommend verifying the specific IP rating of your assembly.\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 silicone heat shrink tubing typically has a 2:1 shrink ratio, meaning it shrinks to approximately half its original inner diameter when heat is applied. For example, a φ6mm tube will shrink down to approximately φ3mm. Always verify the recovered diameter matches your component before cutting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat tool should I use to shrink this tubing?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA heat gun is the recommended tool for even, controlled shrinking. In most cases, a temperature setting of 120°C–150°C (250°F–300°F) is sufficient. Avoid open flames, as they can scorch or unevenly shrink silicone tubing. A standard hair dryer generally does not produce enough heat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs this tubing electrically insulating?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Silicone is an excellent electrical insulator and is commonly used in wire harnessing, connector protection, and terminal insulation. The dielectric strength of silicone tubing is generally sufficient for low-to-medium voltage applications. For high-voltage or safety-rated installations, consult a qualified electrician and verify the voltage rating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I cut the tubing cleanly?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eUse sharp scissors or a utility knife on a flat surface. Silicone is soft and flexible, so a clean single cut is easy to achieve. For very small diameters (φ1mm–φ2mm), micro scissors or precision wire cutters work best to avoid crushing the tube.\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 length above, then add to cart — ships from our US warehouse.\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"Blue \/ φ1mm \/ 1 Meter","offer_id":52310945497362,"sku":"LRPGLBZSJ000911x1","price":4.2,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ1mm \/ 3 Meter","offer_id":52310945530130,"sku":"LRPGLBZSJ000911x3","price":7.55,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ1mm \/ 5 Meter","offer_id":52310945562898,"sku":"LRPGLBZSJ000911x5","price":10.89,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ1mm \/ 10 Meter","offer_id":52310945595666,"sku":"LRPGLBZSJ000911x10","price":19.69,"currency_code":"USD","in_stock":true},{"title":"Blue \/ φ1.5mm \/ 1 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