{"product_id":"3-1-dual-wall-heat-shrink-tube-with-glue-8-sizes-1m","title":"3:1 Dual-Wall Heat Shrink Tube with Glue – 8 Sizes | 1m","description":"\n\u003ch2\u003eTransparent 3:1 Dual-Wall Heat Shrink Tubing with Adhesive Glue Lining – 1 Metre\u003c\/h2\u003e\n\u003cp\u003eProtect, seal, and insulate your wires, cables, and connectors with this premium \u003cstrong\u003etransparent dual-wall heat shrink tube\u003c\/strong\u003e. Featuring a 3:1 shrink ratio and a built-in hot-melt adhesive inner layer, this tubing creates a watertight, strain-relieved seal that bonds firmly to plastic, rubber, and metal surfaces. Available in eight diameters — 1.6, 2.4, 3.2, 4.8, 6.4, 7.9, 9.5, and 12.7 mm — making it ideal for a wide range of electrical, automotive, and DIY applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3:1 Shrink Ratio\u003c\/strong\u003e — Accommodates irregular shapes and provides a tight, professional finish on oversized or stepped connectors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Wall Construction\u003c\/strong\u003e — Outer PE shell maintains flexibility while delivering enhanced mechanical protection; inner adhesive layer melts and flows to create a moisture-resistant seal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Diameter Range\u003c\/strong\u003e — 1.6 \/ 2.4 \/ 3.2 \/ 4.8 \/ 6.4 \/ 7.9 \/ 9.5 \/ 12.7 mm inner diameter options to fit virtually any cable or connector.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdhesive Inner Layer\u003c\/strong\u003e — Bonds securely to plastic, rubber, and metal for a reliable, long-lasting seal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad Working Temperature\u003c\/strong\u003e — Rated from -40 °C to +125 °C for use in demanding environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransparent Finish\u003c\/strong\u003e — Allows easy visual identification of wires and connector labels underneath the tubing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 Metre per Length\u003c\/strong\u003e — Easy to cut to your exact required length with no waste.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolyethylene (PE) — Dual Wall\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShrink Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3:1\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColour\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTransparent \/ Clear\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Diameters (Inner)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.6 \/ 2.4 \/ 3.2 \/ 4.8 \/ 6.4 \/ 7.9 \/ 9.5 \/ 12.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLength per Unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Metre\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInitial Shrink Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e70 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFull Shrink Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e125 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInner Adhesive Melt Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e70 °C – 100 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40 °C to +125 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWire and cable insulation \u0026amp; bundling\u003c\/li\u003e\n  \u003cli\u003eAutomotive wiring harness repairs\u003c\/li\u003e\n  \u003cli\u003eMarine and outdoor electrical connections\u003c\/li\u003e\n  \u003cli\u003eConnector and solder joint sealing\u003c\/li\u003e\n  \u003cli\u003eDIY electronics and hobby projects\u003c\/li\u003e\n  \u003cli\u003eStrain-relief on cable ends\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExplore Related Products\u003c\/h3\u003e\n\u003cp\u003eLooking for more workshop and DIY tools? Check out our \u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0–25 Bar | DIY Tool\u003c\/a\u003e and our \u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does the \"3:1 shrink ratio\" mean for this heat shrink tube?\u003c\/h4\u003e\n\u003cp\u003eA: A 3:1 shrink ratio means the tube will shrink to one-third of its original listed inner diameter when heat is applied. For example, a 9.5 mm tube will shrink down to approximately 3.2 mm, providing a very snug, secure fit over cables, connectors, and irregular-shaped objects — far more versatile than standard 2:1 tubing.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the adhesive glue layer inside the tube for?\u003c\/h4\u003e\n\u003cp\u003eA: The inner hot-melt adhesive layer flows when heat is applied (between 70 °C and 100 °C), filling gaps and bonding to the surface of cables, connectors, metals, and plastics beneath. This creates a watertight, airtight seal that prevents moisture ingress and adds extra strain relief — making it especially useful for outdoor, marine, and automotive wiring applications.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I use a standard heat gun to shrink this tubing?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. A standard heat gun set to the appropriate temperature range (70 °C to start shrinking, up to 125 °C for full shrink) works perfectly. Avoid open flames, as they can scorch or damage the transparent outer wall. Move the heat gun evenly along the tube for a uniform, professional finish.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I choose the right diameter for my cable?\u003c\/h4\u003e\n\u003cp\u003eA: Choose a diameter that is slightly larger than the widest point of the object you want to cover (e.g., the cable or connector). Because this is a 3:1 tube, it has generous coverage — for example, a 4.8 mm tube can cover items down to about 1.6 mm after full shrinkage. When in doubt, size up slightly to ensure the tube slides on easily before applying heat.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the \\\"3:1 shrink ratio\\\" mean for this heat shrink tube?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A 3:1 shrink ratio means the tube will shrink to one-third of its original listed inner diameter when heat is applied. For example, a 9.5 mm tube will shrink down to approximately 3.2 mm, providing a very snug, secure fit over cables, connectors, and irregular-shaped objects — far more versatile than standard 2:1 tubing.\"}}, {\"@type\": \"Question\", \"name\": \"What is the adhesive glue layer inside the tube for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The inner hot-melt adhesive layer flows when heat is applied (between 70 °C and 100 °C), filling gaps and bonding to the surface of cables, connectors, metals, and plastics beneath. This creates a watertight, airtight seal that prevents moisture ingress and adds extra strain relief — making it especially useful for outdoor, marine, and automotive wiring applications.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use a standard heat gun to shrink this tubing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. A standard heat gun set to the appropriate temperature range (70 °C to start shrinking, up to 125 °C for full shrink) works perfectly. Avoid open flames, as they can scorch or damage the transparent outer wall. Move the heat gun evenly along the tube for a uniform, professional finish.\"}}, {\"@type\": \"Question\", \"name\": \"How do I choose the right diameter for my cable?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Choose a diameter that is slightly larger than the widest point of the object you want to cover (e.g., the cable or connector). Because this is a 3:1 tube, it has generous coverage — for example, a 4.8 mm tube can cover items down to about 1.6 mm after full shrinkage. When in doubt, size up slightly to ensure the tube slides on easily before applying heat.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"3:1 Dual-Wall Heat Shrink Tube with Glue – 8 Sizes | 1m\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/products\/transparent-3-1-dual-wall-adhesive-heat-shrink-tube-1m\"}]}\u003c\/script\u003e","brand":"Axl","offers":[{"title":"12.7mm  1m","offer_id":43693082902589,"sku":"200064261:100016944#12.7mm  1m","price":7.75,"currency_code":"USD","in_stock":true},{"title":"9.5mm  1m","offer_id":43693082935357,"sku":"200064261:100016943#9.5mm  1m","price":6.62,"currency_code":"USD","in_stock":true},{"title":"7.9mm  1m","offer_id":43693082968125,"sku":"200064261:100016941#7.9mm  1m","price":6.23,"currency_code":"USD","in_stock":true},{"title":"6.4mm  1m","offer_id":43693083000893,"sku":"200064261:100016940#6.4mm  1m","price":6.02,"currency_code":"USD","in_stock":true},{"title":"30mm 1m","offer_id":43693083033661,"sku":"200064261:19952156#30mm 1m","price":12.05,"currency_code":"USD","in_stock":true},{"title":"25.4mm 1m","offer_id":43693083066429,"sku":"200064261:51820311#25.4mm 1m","price":11.07,"currency_code":"USD","in_stock":true},{"title":"19.1mm 1m","offer_id":43693083099197,"sku":"200064261:42464276#19.1mm 1m","price":9.22,"currency_code":"USD","in_stock":true},{"title":"15.4mm 1m","offer_id":43693083131965,"sku":"200064261:42035795#15.4mm 1m","price":8.23,"currency_code":"USD","in_stock":true},{"title":"4.8mm  1m","offer_id":43693083164733,"sku":"200064261:201336457#4.8mm  1m","price":5.87,"currency_code":"USD","in_stock":true},{"title":"3.2mm  1m","offer_id":43693083197501,"sku":"200064261:201299346#3.2mm  1m","price":5.81,"currency_code":"USD","in_stock":true},{"title":"2.4mm  1m","offer_id":43693083230269,"sku":"200064261:201336456#2.4mm  1m","price":5.78,"currency_code":"USD","in_stock":true},{"title":"1.6mm  1m","offer_id":43693083263037,"sku":"200064261:201336455#1.6mm  1m","price":5.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/3439\/0333\/files\/HTB1CNTiarY1gK0jSZTEq6xDQVXaI.webp?v=1790181725","url":"https:\/\/qtiply.com\/products\/3-1-dual-wall-heat-shrink-tube-with-glue-8-sizes-1m","provider":"QTP","version":"1.0","type":"link"}