{"product_id":"dual-wall-heat-shrink-tubing-with-glue-4-1-ratio-4-20mm-cable-protection","title":"Dual Wall Heat Shrink Tubing with Glue 4:1 – 4 to 20mm","description":"\n\u003ch2\u003eDual Wall Heat Shrink Tubing with Adhesive Glue Liner\u003c\/h2\u003e\n\u003cp\u003eProtect, seal, and waterproof your cables and wiring with this professional-grade \u003cstrong\u003eDual Wall Heat Shrink Tubing\u003c\/strong\u003e. Featuring a 4:1 shrink ratio and an inner adhesive glue lining, this tubing creates a tight, moisture-resistant seal around cables, connectors, splices, and terminals — making it an essential solution for automotive, marine, electrical, and DIY wiring projects.\u003c\/p\u003e\n\n\u003cp\u003eAvailable in six diameters — \u003cstrong\u003e4mm, 6mm, 8mm, 12mm, 16mm, and 20mm\u003c\/strong\u003e — this flexible PE tubing accommodates a wide range of wire gauges and bundle sizes. The hot-melt adhesive inner layer flows and bonds securely to the underlying surface when heat is applied, providing superior strain relief and protecting connections from moisture, corrosion, dust, and abrasion.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4:1 Shrink Ratio\u003c\/strong\u003e — shrinks to one-quarter of its original diameter for a snug, custom fit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Wall Construction\u003c\/strong\u003e — outer PE shell for mechanical protection; inner hot-melt adhesive for waterproofing and bonding\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e6 Size Options\u003c\/strong\u003e — 4mm, 6mm, 8mm, 12mm, 16mm, and 20mm to suit various cable diameters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical Insulation\u003c\/strong\u003e — provides reliable insulation to keep connections safe and secure\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMoisture \u0026amp; Corrosion Resistant\u003c\/strong\u003e — adhesive liner creates a barrier against water ingress and oxidation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy to Apply\u003c\/strong\u003e — use a heat gun or lighter; shrinks quickly and evenly\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Use\u003c\/strong\u003e — suitable for automotive wiring, marine cables, electronics, outdoor installations, and more\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Polyethylene (PE)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePE (Polyethylene)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShrink Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4:1\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Diameters\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4mm, 6mm, 8mm, 12mm, 16mm, 20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDual Wall Heat Shrinkable with Adhesive Glue\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Required\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-channel-scr-solid-state-relay-switch-module-dc3-24v-40a-optocoupler\"\u003e1-Channel SCR Solid State Relay Module DC3-24V 40A Optocoupler\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-8m-displayport-to-hdmi-cable-4k-dp-adapter-pc-hdtv-projector\"\u003e1.8M DisplayPort to HDMI Cable 4K – DP Adapter for PC \u0026amp; TV\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-pack-12v-3-pin-pc-fan-power-extension-cable-26cm-cpu-gpu-cooler\"\u003e10-Pack 12V 3-Pin PC Fan Extension Cable 26cm – CPU GPU Cooler\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSafety \u0026amp; Standards Reference\u003c\/h3\u003e\n\u003cp\u003eFor guidance on electrical wiring safety and best practices, visit the U.S. Consumer Product Safety Commission – Electrical Safety.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Heat-shrink_tubing\" target=\"_blank\" rel=\"noopener\"\u003eHeat-shrink tubing\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the shrink ratio of this dual wall heat shrink tubing?\u003c\/h4\u003e\n\u003cp\u003eA: This tubing features a 4:1 shrink ratio, meaning it shrinks down to one-quarter of its original inner diameter when heat is applied. This generous ratio makes it ideal for securing irregular shapes and large cable bundles with a firm, sealed fit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this heat shrink tubing waterproof?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The dual wall design includes an inner layer of hot-melt adhesive glue that melts and flows when heat is applied, sealing the connection against moisture, water ingress, and corrosion. It is suitable for outdoor, marine, and automotive wiring applications where moisture protection is essential.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What sizes are available and how do I choose the right one?\u003c\/h4\u003e\n\u003cp\u003eA: This tubing is available in six diameters: 4mm, 6mm, 8mm, 12mm, 16mm, and 20mm (before shrinking). Choose a size whose pre-shrink inner diameter is slightly larger than the cable or connector you need to cover — the 4:1 ratio allows for a wide range of final fit sizes after shrinking.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What tool do I need to apply this heat shrink tubing?\u003c\/h4\u003e\n\u003cp\u003eA: A standard heat gun is the recommended tool for even, controlled shrinking. A lighter or match can also be used for small sections, but a heat gun provides more consistent results, especially for larger diameters like 16mm and 20mm.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the shrink ratio of this dual wall heat shrink tubing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This tubing features a 4:1 shrink ratio, meaning it shrinks down to one-quarter of its original inner diameter when heat is applied. This generous ratio makes it ideal for securing irregular shapes and large cable bundles with a firm, sealed fit.\"}}, {\"@type\": \"Question\", \"name\": \"Is this heat shrink tubing waterproof?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The dual wall design includes an inner layer of hot-melt adhesive glue that melts and flows when heat is applied, sealing the connection against moisture, water ingress, and corrosion. It is suitable for outdoor, marine, and automotive wiring applications where moisture protection is essential.\"}}, {\"@type\": \"Question\", \"name\": \"What sizes are available and how do I choose the right one?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This tubing is available in six diameters: 4mm, 6mm, 8mm, 12mm, 16mm, and 20mm (before shrinking). Choose a size whose pre-shrink inner diameter is slightly larger than the cable or connector you need to cover — the 4:1 ratio allows for a wide range of final fit sizes after shrinking.\"}}, {\"@type\": \"Question\", \"name\": \"What tool do I need to apply this heat shrink tubing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A standard heat gun is the recommended tool for even, controlled shrinking. A lighter or match can also be used for small sections, but a heat gun provides more consistent results, especially for larger diameters like 16mm and 20mm.\"}}]}\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:\/\/oasis-select.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Electronics \u0026 Tech\", \"item\": \"https:\/\/oasis-select.com\/collections\/electronics-tech\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Dual Wall Heat Shrink Tubing with Glue 4:1 – 4 to 20mm\", \"item\": \"https:\/\/oasis-select.com\/products\/dual-wall-heat-shrink-tubing-with-glue-4-1-ratio-4-20mm-cable-protection\"}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"black \/ 20 mm","offer_id":47727662334057,"sku":"100006028:19952726;14:193","price":9.56,"currency_code":"USD","in_stock":true},{"title":"black \/ 16mm","offer_id":47727662366825,"sku":"100006028:3269250#16mm;14:193","price":11.5,"currency_code":"USD","in_stock":true},{"title":"black \/ 6mm","offer_id":47727662399593,"sku":"100006028:100016940;14:193","price":9.54,"currency_code":"USD","in_stock":true},{"title":"black \/ 8mm","offer_id":47727662432361,"sku":"100006028:100016941;14:193","price":11.5,"currency_code":"USD","in_stock":true},{"title":"black \/ 12mm","offer_id":47727662465129,"sku":"100006028:100016944;14:193","price":9.54,"currency_code":"USD","in_stock":true},{"title":"black \/ 4mm","offer_id":47727662497897,"sku":"100006028:201336457;14:193","price":8.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/S3e88de09ebd14a90ae2288452792478eE_b57d19d0-d221-4070-a650-69c468c271b3.webp?v=1782670497","url":"https:\/\/oasis-select.com\/products\/dual-wall-heat-shrink-tubing-with-glue-4-1-ratio-4-20mm-cable-protection","provider":"Oasis Select","version":"1.0","type":"link"}