{"product_id":"dual-wall-adhesive-heat-shrink-tubing-glue-lined-4-1-ratio-4-20mm","title":"Dual Wall Adhesive Heat Shrink Tubing 4:1 – 4 to 20mm Sizes","description":"\n\u003ch2\u003eDual Wall Adhesive Heat Shrink Tubing – Professional Cable Protection\u003c\/h2\u003e\n\u003cp\u003eKeep your wiring neat, secure, and fully protected with this \u003cstrong\u003eDual Wall Heat Shrink Tubing with Hot Melt Glue Lining\u003c\/strong\u003e. Engineered from high-quality polyethylene (PE) with an inner adhesive layer, these tubes shrink at a \u003cstrong\u003e4:1 ratio\u003c\/strong\u003e, creating a tight, moisture-resistant, and mechanically strong seal around cables, wires, connectors, and splices. Available in six popular diameters — \u003cstrong\u003e4mm, 6mm, 8mm, 12mm, 16mm, and 20mm\u003c\/strong\u003e — there's an ideal size for every project.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose Dual Wall Heat Shrink Tubing?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4:1 Shrink Ratio:\u003c\/strong\u003e Exceptional coverage — ideal for irregular shapes, connectors, and bundle terminations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHot Melt Adhesive Inner Layer:\u003c\/strong\u003e The internal glue flows and seals as it shrinks, creating a watertight, corrosion-resistant barrier against moisture, dust, and chemicals.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePolyethylene (PE) Construction:\u003c\/strong\u003e Flexible, durable, and resistant to abrasion, UV, and common solvents.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Size Range:\u003c\/strong\u003e 4mm, 6mm, 8mm, 12mm, 16mm, and 20mm inner diameters to handle a broad variety of cables and wire gauges.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical Insulation:\u003c\/strong\u003e Provides a reliable dielectric barrier to safeguard connections from short circuits and signal interference.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Applications:\u003c\/strong\u003e Suitable for automotive wiring harnesses, marine cables, electrical panels, DIY electronics, and industrial installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polyethylene (PE) with hot-melt adhesive inner lining\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShrink Ratio:\u003c\/strong\u003e 4:1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable Diameters:\u003c\/strong\u003e 4mm \/ 6mm \/ 8mm \/ 12mm \/ 16mm \/ 20mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Dual Wall, Heat Shrinkable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication Method:\u003c\/strong\u003e Heat gun or similar controlled heat source\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomotive and motorcycle wiring harnesses\u003c\/li\u003e\n  \u003cli\u003eMarine and outdoor electrical connections\u003c\/li\u003e\n  \u003cli\u003eBattery terminal protection\u003c\/li\u003e\n  \u003cli\u003eDIY electronics and home wiring projects\u003c\/li\u003e\n  \u003cli\u003eIndustrial cable management and bundling\u003c\/li\u003e\n  \u003cli\u003eConnector and splice sealing\u003c\/li\u003e\n\u003c\/ul\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 best practices in electrical wiring safety and insulation standards, refer to the U.S. Consumer Product Safety Commission – Electrical Safety Resources.\u003c\/p\u003e\n\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 can shrink down to one-quarter of its original inner diameter. This makes it excellent for covering larger connectors, irregular shapes, and bundled wire terminations securely.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What tool do I need to apply dual wall heat shrink tubing with glue?\u003c\/h4\u003e\n\u003cp\u003eA: A standard heat gun is recommended for best results. Apply even, controlled heat around the tube — the outer PE layer will shrink tightly while the inner adhesive lining melts and flows to create a sealed, moisture-proof bond around your cable or connector.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Which diameter should I choose for my cable?\u003c\/h4\u003e\n\u003cp\u003eA: Select a tubing inner diameter that is slightly larger than the widest part of your cable or connector before shrinking. Options include 4mm, 6mm, 8mm, 12mm, 16mm, and 20mm — suitable for everything from thin signal wires to thick power cables and battery terminals.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this heat shrink tubing waterproof?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The hot-melt adhesive inner layer melts during the shrinking process and forms a watertight seal around the cable, making it suitable for outdoor, marine, and automotive environments where moisture ingress is a concern.\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 can shrink down to one-quarter of its original inner diameter. 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The hot-melt adhesive inner layer melts during the shrinking process and forms a watertight seal around the cable, making it suitable for outdoor, marine, and automotive environments where moisture ingress is a concern.\"}}]}\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 Adhesive Heat Shrink Tubing 4:1 – 4 to 20mm Sizes\", \"item\": \"https:\/\/oasis-select.com\/products\/dual-wall-adhesive-heat-shrink-tubing-glue-lined-4-1-ratio-4-20mm\"}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"black \/ 4mm","offer_id":47727513272425,"sku":"100006028:201336457;14:193","price":8.54,"currency_code":"USD","in_stock":true},{"title":"black \/ 20 mm","offer_id":47727513305193,"sku":"100006028:19952726;14:193","price":8.54,"currency_code":"USD","in_stock":true},{"title":"black \/ 8mm","offer_id":47727513337961,"sku":"100006028:100016941;14:193","price":8.54,"currency_code":"USD","in_stock":true},{"title":"black \/ 12mm","offer_id":47727513370729,"sku":"100006028:100016944;14:193","price":8.54,"currency_code":"USD","in_stock":true},{"title":"black \/ 16mm","offer_id":47727513403497,"sku":"100006028:3269250#16mm;14:193","price":8.54,"currency_code":"USD","in_stock":true},{"title":"black \/ 6mm","offer_id":47727513436265,"sku":"100006028:100016940;14:193","price":8.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/S111615f3489f4d2ab8cd86865bcc46f2t.webp?v=1782662259","url":"https:\/\/oasis-select.com\/products\/dual-wall-adhesive-heat-shrink-tubing-glue-lined-4-1-ratio-4-20mm","provider":"Oasis Select","version":"1.0","type":"link"}