{"product_id":"clear-ptfe-heat-shrink-tubing-4-1-ratio-high-temp-260c","title":"Clear PTFE Heat Shrink Tubing 4:1 Ratio — φ2mm to φ9.6mm, High Temp 260°C","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 wire or cable?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Measure the outer diameter of your wire or connector before shrinking. With a 4:1 shrink ratio, the tubing shrinks to approximately one-quarter of its supplied diameter. For example, φ8mm tubing shrinks down to roughly 2mm. Choose a supplied diameter at least 20–30% larger than your cable outer diameter for easy insertion.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What temperature is needed to shrink this tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"PTFE heat shrink tubing typically begins to shrink at around 327°C (620°F). A heat gun set to high is generally sufficient. Avoid open flames, which can cause uneven shrinkage or discoloration.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this tubing handle high-temperature environments after shrinking?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Once shrunk, this PTFE sleeve is rated for continuous use up to 260°C (500°F), making it suitable for engine bays, industrial wiring, and other high-heat applications.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is PTFE heat shrink tubing resistant to chemicals and solvents?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"PTFE is generally resistant to a wide range of chemicals, oils, fuels, and solvents. It is commonly used in laboratory, automotive, and industrial environments where chemical exposure is a concern.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this tubing outdoors or in wet environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"PTFE is inherently moisture-resistant and does not absorb water, making it suitable for outdoor and damp environments. However, this tubing does not have an adhesive inner lining, so it does not provide a fully waterproof seal on its own.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between 2:1 and 4:1 shrink ratio?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A 2:1 ratio shrinks to half the original diameter; a 4:1 ratio shrinks to one-quarter. The 4:1 ratio is better suited for irregular shapes, connectors, or situations where you need to cover a range of diameters with a single piece of tubing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this tubing electrically insulating?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. PTFE is an excellent electrical insulator with a very low dielectric constant, making this tubing well-suited for insulating wire splices, terminals, and electronic components.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eClear PTFE Heat Shrink Tubing — Reliable Insulation for High-Temp Wiring Projects\u003c\/h2\u003e\n\u003cp\u003eWhen standard PVC or polyolefin sleeves fall short in demanding environments, electricians, automotive technicians, and electronics hobbyists turn to PTFE heat shrink tubing. Whether you're routing wires through an engine bay, protecting sensor leads in industrial equipment, or insulating delicate PCB connections, ordinary sleeving simply can't handle the heat, chemicals, or mechanical stress involved.\u003c\/p\u003e\n\u003cp\u003eThis clear PTFE heat shrink tubing features a \u003cstrong\u003e4:1 shrink ratio\u003c\/strong\u003e, shrinking to approximately one-quarter of its supplied diameter for a snug, conforming fit over connectors, splices, and irregular shapes. Available in five diameters — \u003cstrong\u003eφ2mm (≈5\/64\"), φ4mm (≈5\/32\"), φ6mm (≈15\/64\"), φ8mm (≈5\/16\"), and φ9.6mm (≈3\/8\")\u003c\/strong\u003e — and lengths from \u003cstrong\u003e1 meter (≈3.3 ft) to 5 meters (≈16.4 ft)\u003c\/strong\u003e. The transparent wall lets you visually confirm wire placement before and after shrinking.\u003c\/p\u003e\n\u003cp\u003eTypical use cases include insulating automotive wiring harnesses and sensor cables, protecting thermocouple leads and heating element connections in industrial ovens, and sleeving laboratory or chemical-handling lines where resistance to solvents and acids is essential.\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 Suitable for copper, aluminum, and stranded wire. Works with standard heat guns. Select diameter based on your cable's outer diameter before shrinking. See variant options for all available sizes.\n\u003c\/div\u003e\n\n\u003ch2\u003e✅ Key Features of These Clear PTFE 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\u003e260°C Continuous Rating\u003c\/strong\u003e — Withstands sustained temperatures up to 260°C (500°F), making it a dependable choice for engine bay wiring and industrial cable insulation where heat resistance is non-negotiable.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔍\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e4:1 Shrink Ratio\u003c\/strong\u003e — Shrinks to one-quarter of its original diameter, conforming tightly around connectors, terminals, and irregular cable profiles where standard 2:1 tubing won't seal properly.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e👁️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eCrystal-Clear Wall\u003c\/strong\u003e — Transparent PTFE construction lets you verify wire alignment and inspect connections without removing the sleeve — useful for quality control in electronics assembly.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚗️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eChemical and Solvent Resistance\u003c\/strong\u003e — Resistant to oils, fuels, acids, and most industrial solvents, making this PTFE cable sleeve suitable for laboratory, chemical processing, and automotive fluid environments.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚡\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eExcellent Electrical Insulation\u003c\/strong\u003e — Low dielectric constant and high dielectric strength make this tubing effective for insulating wire splices, terminals, and sensitive electronic components.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eMultiple Diameters and Cut Lengths\u003c\/strong\u003e — Choose from φ2mm to φ9.6mm in 1–5 meter lengths, so you get exactly the quantity you need without waste — ideal for both small repairs and larger wiring projects.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e📐 Technical Specifications — PTFE 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\u003ePTFE (Polytetrafluoroethylene)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor \/ Appearance\u003c\/th\u003e\n\u003ctd\u003eClear (transparent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShrink Ratio\u003c\/th\u003e\n\u003ctd\u003e4:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Diameters (Supplied)\u003c\/th\u003e\n\u003ctd\u003eφ2mm (≈5\/64\"), φ4mm (≈5\/32\"), φ6mm (≈15\/64\"), φ8mm (≈5\/16\"), φ9.6mm (≈3\/8\")\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), 3m (≈9.8 ft), 4m (≈13.1 ft), 5m (≈16.4 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Continuous Use Temperature\u003c\/th\u003e\n\u003ctd\u003e260°C (500°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShrink Activation Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically 327°C (620°F) — use a heat gun\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\u003eElectrical Insulation\u003c\/th\u003e\n\u003ctd\u003eYes — suitable for wire and terminal insulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eChemical Resistance\u003c\/th\u003e\n\u003ctd\u003eResistant to oils, fuels, acids, and most solvents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMoisture Resistance\u003c\/th\u003e\n\u003ctd\u003eYes — PTFE does not absorb water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdhesive Inner Lining\u003c\/th\u003e\n\u003ctd\u003eNo — does not form a waterproof seal; use adhesive-lined tubing for sealing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication Method\u003c\/th\u003e\n\u003ctd\u003eHeat gun (recommended); avoid open flame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003ePer meter length — select diameter and length above\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 This tubing does not include an adhesive inner lining and does not form a waterproof seal on its own. For moisture-sealing applications, contact us to confirm the right product.\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 wire or cable?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the outer diameter of your wire or connector before shrinking. With a 4:1 shrink ratio, the tubing shrinks to approximately one-quarter of its supplied diameter — for example, φ8mm tubing shrinks down to roughly 2mm. Choose a supplied diameter at least 20–30% larger than your cable's outer diameter to allow easy insertion, then apply heat evenly along the length.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat temperature is needed to shrink this PTFE tubing?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003ePTFE heat shrink tubing typically begins to shrink at around 327°C (620°F). A heat gun set to high is generally sufficient. Avoid open flames, which can cause uneven shrinkage or surface discoloration. Move the heat gun steadily along the tubing for uniform results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan this tubing handle high-temperature environments after shrinking?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. Once shrunk, this PTFE electrical cable sleeve is rated for continuous use up to 260°C (500°F). It is commonly used in engine bays, industrial control panels, heating elements, and other sustained high-heat applications where standard polyolefin tubing would degrade.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs PTFE heat shrink tubing resistant to chemicals and solvents?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003ePTFE is generally resistant to a wide range of chemicals, including oils, fuels, hydraulic fluids, acids, and most industrial solvents. It is a common choice for laboratory tubing, chemical processing lines, and automotive fluid environments. If you have a specific chemical compatibility question, contact us to confirm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this tubing outdoors or in wet environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003ePTFE is inherently moisture-resistant and does not absorb water, so it performs well in outdoor and damp conditions. However, this tubing does not have an adhesive inner lining, so it does not create a fully waterproof seal on its own. For applications requiring moisture sealing, adhesive-lined heat shrink tubing is typically recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between a 2:1 and 4:1 shrink ratio, and which do I need?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA 2:1 ratio shrinks to half the original diameter; a 4:1 ratio shrinks to one-quarter. The 4:1 ratio is better suited for covering connectors, irregular shapes, or situations where you need one piece of tubing to fit a range of cable diameters. If you're sleeving a uniform round wire, a 2:1 ratio may be sufficient — but the 4:1 gives you more flexibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs this tubing electrically insulating? What voltage rating should I expect?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. PTFE is an excellent electrical insulator with a very low dielectric constant. This clear PTFE heat shrink tubing is well-suited for insulating wire splices, terminals, and electronic components. Specific voltage ratings vary by wall thickness after shrinking — contact us to confirm if you have a specific dielectric requirement.\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":"φ2mm \/ 1 Meter","offer_id":52329928458514,"sku":"GLFBFHHGLBZSJ000648x1","price":4.9,"currency_code":"USD","in_stock":true},{"title":"φ4mm \/ 1 Meter","offer_id":52329928491282,"sku":"GLFBFHHGLBZSJ000649x1","price":5.58,"currency_code":"USD","in_stock":true},{"title":"φ6mm \/ 1 Meter","offer_id":52329928524050,"sku":"GLFBFHHGLBZSJ000650x1","price":7.44,"currency_code":"USD","in_stock":true},{"title":"φ8mm \/ 1 Meter","offer_id":52329928556818,"sku":"GLFBFHHGLBZSJ000651x1","price":8.68,"currency_code":"USD","in_stock":true},{"title":"φ9.6mm \/ 1 Meter","offer_id":52329928589586,"sku":"GLFBFHHGLBZSJ000652x1","price":10.54,"currency_code":"USD","in_stock":true},{"title":"φ2mm \/ 2 Meter","offer_id":52329928622354,"sku":"GLFBFHHGLBZSJ000648x2","price":7.93,"currency_code":"USD","in_stock":true},{"title":"φ4mm \/ 2 Meter","offer_id":52329928655122,"sku":"GLFBFHHGLBZSJ000649x2","price":9.3,"currency_code":"USD","in_stock":true},{"title":"φ6mm \/ 2 Meter","offer_id":52329928687890,"sku":"GLFBFHHGLBZSJ000650x2","price":13.02,"currency_code":"USD","in_stock":true},{"title":"φ8mm \/ 2 Meter","offer_id":52329928720658,"sku":"GLFBFHHGLBZSJ000651x2","price":15.49,"currency_code":"USD","in_stock":true},{"title":"φ9.6mm \/ 2 Meter","offer_id":52329928753426,"sku":"GLFBFHHGLBZSJ000652x2","price":19.22,"currency_code":"USD","in_stock":true},{"title":"φ2mm \/ 3 Meter","offer_id":52329928786194,"sku":"GLFBFHHGLBZSJ000648x3","price":10.98,"currency_code":"USD","in_stock":true},{"title":"φ4mm \/ 3 Meter","offer_id":52329928818962,"sku":"GLFBFHHGLBZSJ000649x3","price":13.02,"currency_code":"USD","in_stock":true},{"title":"φ6mm \/ 3 Meter","offer_id":52329928851730,"sku":"GLFBFHHGLBZSJ000650x3","price":18.59,"currency_code":"USD","in_stock":true},{"title":"φ8mm \/ 3 Meter","offer_id":52329928884498,"sku":"GLFBFHHGLBZSJ000651x3","price":22.32,"currency_code":"USD","in_stock":true},{"title":"φ9.6mm \/ 3 Meter","offer_id":52329928917266,"sku":"GLFBFHHGLBZSJ000652x3","price":27.89,"currency_code":"USD","in_stock":true},{"title":"φ2mm \/ 4 Meter","offer_id":52329928950034,"sku":"GLFBFHHGLBZSJ000648x4","price":14.01,"currency_code":"USD","in_stock":true},{"title":"φ4mm \/ 4 Meter","offer_id":52329928982802,"sku":"GLFBFHHGLBZSJ000649x4","price":16.74,"currency_code":"USD","in_stock":true},{"title":"φ6mm \/ 4 Meter","offer_id":52329929015570,"sku":"GLFBFHHGLBZSJ000650x4","price":24.18,"currency_code":"USD","in_stock":true},{"title":"φ8mm \/ 4 Meter","offer_id":52329929048338,"sku":"GLFBFHHGLBZSJ000651x4","price":29.13,"currency_code":"USD","in_stock":true},{"title":"φ9.6mm \/ 4 Meter","offer_id":52329929081106,"sku":"GLFBFHHGLBZSJ000652x4","price":36.57,"currency_code":"USD","in_stock":true},{"title":"φ2mm \/ 5 Meter","offer_id":52329929113874,"sku":"GLFBFHHGLBZSJ000648x5","price":17.04,"currency_code":"USD","in_stock":true},{"title":"φ4mm \/ 5 Meter","offer_id":52329929146642,"sku":"GLFBFHHGLBZSJ000649x5","price":20.45,"currency_code":"USD","in_stock":true},{"title":"φ6mm \/ 5 Meter","offer_id":52329929179410,"sku":"GLFBFHHGLBZSJ000650x5","price":29.76,"currency_code":"USD","in_stock":true},{"title":"φ8mm \/ 5 Meter","offer_id":52329929212178,"sku":"GLFBFHHGLBZSJ000651x5","price":35.96,"currency_code":"USD","in_stock":true},{"title":"φ9.6mm \/ 5 Meter","offer_id":52329929244946,"sku":"GLFBFHHGLBZSJ000652x5","price":45.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture6of6_1f41de63-449c-4b13-95ca-bbd602cb9bc1.jpg?v=1780644096","url":"https:\/\/homediyer.com\/products\/clear-ptfe-heat-shrink-tubing-4-1-ratio-high-temp-260c","provider":"HomeDIYer","version":"1.0","type":"link"}