{"product_id":"dual-wall-adhesive-heat-shrink-tubing-glue-4-1-ratio-cable-protection","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, waterproof, and protected with this \u003cstrong\u003eDual Wall Heat Shrink Tubing with Adhesive Glue Lining\u003c\/strong\u003e. Available in sizes 4, 6, 8, 12, 16, and 20mm, this PE-based tubing delivers a powerful \u003cstrong\u003e4:1 shrink ratio\u003c\/strong\u003e — meaning it shrinks down to just one-quarter of its original diameter for a firm, secure, and moisture-resistant seal around cables, wires, and connectors.\u003c\/p\u003e\n\u003cp\u003eThe inner adhesive (hot-melt glue) layer melts and flows as the tube shrinks, filling gaps and bonding tightly to the underlying surface. The result is a robust, waterproof sleeve that protects connections from moisture, dust, abrasion, vibration, and corrosion.\u003c\/p\u003e\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 Superior coverage and tight fit around irregular shapes and connectors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Wall Construction:\u003c\/strong\u003e Tough outer PE shell with an inner hot-melt adhesive layer for a waterproof, strain-relieved seal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Sizes:\u003c\/strong\u003e Available in 4mm, 6mm, 8mm, 12mm, 16mm, and 20mm diameters to cover a wide range of wire and cable gauges.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrical Insulation:\u003c\/strong\u003e Provides reliable dielectric insulation, protecting against shorts and electrical faults.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorrosion \u0026amp; Moisture Resistant:\u003c\/strong\u003e The adhesive lining creates a watertight barrier ideal for marine, automotive, and outdoor applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAbrasion \u0026amp; Chemical Resistance:\u003c\/strong\u003e Durable PE outer wall stands up to mechanical wear and common chemicals.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy to Apply:\u003c\/strong\u003e Simply slide over the wire or connector and apply heat with a heat gun — no special tools required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polyethylene (PE) – Dual Wall with Hot-Melt Adhesive Inner Layer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShrink Ratio:\u003c\/strong\u003e 4:1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e 4mm \/ 6mm \/ 8mm \/ 12mm \/ 16mm \/ 20mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Heat Shrinkable Tubing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Cable protection, wire splicing, connector sealing, strain relief\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMarine \u0026amp; automotive wiring harnesses\u003c\/li\u003e\n  \u003cli\u003eOutdoor electrical cable joints and splices\u003c\/li\u003e\n  \u003cli\u003eBattery terminal protection\u003c\/li\u003e\n  \u003cli\u003eCable strain relief on tools and appliances\u003c\/li\u003e\n  \u003cli\u003eDIY electronics, home wiring repairs, and hobby projects\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\/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  \u003cli\u003e\u003ca href=\"\/products\/usb-c-to-hdmi-cable-1-8m-4k-macbook-laptop-phone\"\u003e1.8M USB-C to HDMI Cable 4K – MacBook, Laptop \u0026amp; Phone\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor guidance on safe electrical insulation practices, refer to the \u003ca href=\"https:\/\/www.osha.gov\/electrical\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOSHA Electrical Safety Resource\u003c\/a\u003e and CPSC Electrical Safety Guidelines.\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 will shrink to one-quarter of its original supplied diameter when heat is applied. This makes it ideal for covering connectors, terminals, and irregular cable shapes that a standard 2:1 tube cannot accommodate.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I apply dual wall adhesive heat shrink tubing?\u003c\/h4\u003e\n\u003cp\u003eA: Slide the appropriately sized tube over your cable, wire, or connector before making the connection. Once in position, apply even heat using a heat gun (or similar heat source) along the length of the tube. The outer PE layer will shrink while the inner adhesive layer melts and flows to create a waterproof, bonded seal. Allow to cool before handling.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this heat shrink tubing suitable for outdoor and marine use?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The dual wall design — with its hot-melt adhesive inner lining — creates a watertight, corrosion-resistant seal that is well-suited for outdoor, marine, and automotive environments where exposure to moisture and vibration is a concern.\u003c\/p\u003e\n\u003ch4\u003eQ: Which size should I choose for my cable?\u003c\/h4\u003e\n\u003cp\u003eA: Choose a size whose supplied (pre-shrink) inner diameter is slightly larger than the outer diameter of your cable or connector. After shrinking at a 4:1 ratio, the tubing will grip firmly. Available sizes are 4mm, 6mm, 8mm, 12mm, 16mm, and 20mm to cover most common wire and cable gauges.\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 will shrink to one-quarter of its original supplied diameter when heat is applied. This makes it ideal for covering connectors, terminals, and irregular cable shapes that a standard 2:1 tube cannot accommodate.\"}}, {\"@type\": \"Question\", \"name\": \"How do I apply dual wall adhesive heat shrink tubing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Slide the appropriately sized tube over your cable, wire, or connector before making the connection. Once in position, apply even heat using a heat gun (or similar heat source) along the length of the tube. The outer PE layer will shrink while the inner adhesive layer melts and flows to create a waterproof, bonded seal. Allow to cool before handling.\"}}, {\"@type\": \"Question\", \"name\": \"Is this heat shrink tubing suitable for outdoor and marine use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The dual wall design — with its hot-melt adhesive inner lining — creates a watertight, corrosion-resistant seal that is well-suited for outdoor, marine, and automotive environments where exposure to moisture and vibration is a concern.\"}}, {\"@type\": \"Question\", \"name\": \"Which size should I choose for my cable?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Choose a size whose supplied (pre-shrink) inner diameter is slightly larger than the outer diameter of your cable or connector. After shrinking at a 4:1 ratio, the tubing will grip firmly. Available sizes are 4mm, 6mm, 8mm, 12mm, 16mm, and 20mm to cover most common wire and cable gauges.\"}}]}\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-4-1-ratio-cable-protection\"}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"black \/ 12mm","offer_id":47727541616745,"sku":"100006028:100016944;14:193","price":8.42,"currency_code":"USD","in_stock":true},{"title":"black \/ 4mm","offer_id":47727541649513,"sku":"100006028:201336457;14:193","price":8.14,"currency_code":"USD","in_stock":true},{"title":"black \/ 6mm","offer_id":47727541682281,"sku":"100006028:100016940;14:193","price":8.39,"currency_code":"USD","in_stock":true},{"title":"black \/ 8mm","offer_id":47727541715049,"sku":"100006028:100016941;14:193","price":8.39,"currency_code":"USD","in_stock":true},{"title":"black \/ 16mm","offer_id":47727541747817,"sku":"100006028:3269250#16mm;14:193","price":9.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/Sd9271a13349240e9b8758ff8dc1e79a6e_f974f7d1-4c10-439a-be43-03d1de30604b.webp?v=1782662497","url":"https:\/\/oasis-select.com\/products\/dual-wall-adhesive-heat-shrink-tubing-glue-4-1-ratio-cable-protection","provider":"Oasis Select","version":"1.0","type":"link"}