{"product_id":"1m-4-1-heat-shrink-tubing-waterproof-anti-corrosion-wire-harness","title":"1m 4:1 Heat Shrink Tubing – Waterproof \u0026 Anti-Corrosion","description":"\n\u003ch2\u003eUltimate Protection for Your Wiring — 1m 4:1 Heat Shrink Tubing\u003c\/h2\u003e\n\u003cp\u003eKeep your wires, cables, and multi-strand harnesses safe from moisture, corrosion, and wear with this heavy-duty \u003cstrong\u003e4:1 ratio heat shrink tubing\u003c\/strong\u003e. Engineered for demanding environments, this 1-metre length of PVC heat-shrinkable tubing provides a tight, leak-proof seal that protects wire bundles, connectors, and splices in automotive, marine, electrical, and industrial applications. When heated, the tubing shrinks to \u003cem\u003eone quarter of its original diameter\u003c\/em\u003e, conforming snugly to irregular shapes and creating a robust waterproof barrier that keeps corrosion and contaminants out.\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 down to 25% of its expanded diameter for a firm, custom fit around cables, connectors, and wire harnesses of varied sizes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWaterproof Sealing:\u003c\/strong\u003e Built-in adhesive lining melts and flows as it shrinks, creating an airtight, moisture-resistant seal — ideal for outdoor and marine wiring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnti-Corrosion Protection:\u003c\/strong\u003e Guards metal connections and conductors against rust, oxidation, salt spray, and chemical exposure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWear-Resistant PVC Construction:\u003c\/strong\u003e Durable PVC material resists abrasion, UV exposure, and physical damage, extending the life of your wiring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLeak-Proof Design:\u003c\/strong\u003e Perfect for sealing multi-strand harnesses where water ingress could cause shorts or signal degradation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 Metre Length:\u003c\/strong\u003e Generous length gives you flexibility for multiple repairs or one large project — easy to cut to your required size.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Application:\u003c\/strong\u003e Suitable for automotive wiring, marine cables, electrical harnesses, plumbing pipes, and DIY electrical projects.\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 or lighter — shrinks uniformly for a professional finish.\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\u003ePVC (Heat Shrinkable)\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\u003eLength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Metre\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeal Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWaterproof \/ Adhesive-Lined\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomotive, Marine, Electrical, Industrial\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\u003eHow to Use\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eCut the tubing to your desired length using scissors or a sharp blade.\u003c\/li\u003e\n  \u003cli\u003eSlide the tubing over the wire, connector, or splice you wish to protect.\u003c\/li\u003e\n  \u003cli\u003eApply even heat using a heat gun, hair dryer on high, or a lighter. Keep the heat source moving to avoid burning.\u003c\/li\u003e\n  \u003cli\u003eThe tubing will shrink uniformly, the adhesive lining will melt and seal, and you'll be left with a clean, professional, waterproof finish.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/hex-shank-wire-twister-drill-attachment-rebar-tie-tool\"\u003e1\/4\" Hex Shank Wire Twister Drill Attachment | Rebar Tie Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/100-pack-4-5cm-pvc-suction-cups-car-windshield-glass-bathroom-wall\"\u003e100-Pack 4.5cm PVC Suction Cups for Car, Glass \u0026amp; Bathroom Wall\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSafety \u0026amp; Standards Reference\u003c\/h3\u003e\n\u003cp\u003eFor safe electrical wiring practices and standards, refer to guidance from the U.S. Consumer Product Safety Commission – Electrical Safety.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the 4:1 shrink ratio and why does it matter?\u003c\/h4\u003e\n\u003cp\u003eA: A 4:1 shrink ratio means that the heat shrink tubing will shrink down to one-quarter of its original expanded diameter when heat is applied. This is significantly more than standard 2:1 tubing, making it suitable for covering connectors, irregular shapes, and stepped wire bundles where a tighter, more secure seal is needed.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this heat shrink tubing waterproof?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This tubing features an adhesive inner lining that melts when heated, flowing around the wire or connector to create a leak-proof, waterproof seal. It is ideal for outdoor, automotive, and marine applications where moisture resistance is critical.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What heat source should I use to shrink the tubing?\u003c\/h4\u003e\n\u003cp\u003eA: A dedicated heat gun is recommended for best results, as it provides even, controlled heat. A standard hair dryer on its highest setting or a lighter can also be used for smaller applications. Keep the heat source moving steadily to ensure uniform shrinkage and avoid scorching the tubing.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this tubing be used in automotive and marine wiring?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The 4:1 ratio, waterproof adhesive lining, and anti-corrosion protection make this tubing an excellent choice for automotive wiring harnesses, marine cables, boat wiring, trailer connectors, and any environment exposed to vibration, moisture, or salt spray.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the 4:1 shrink ratio and why does it matter?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A 4:1 shrink ratio means that the heat shrink tubing will shrink down to one-quarter of its original expanded diameter when heat is applied. 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The 4:1 ratio, waterproof adhesive lining, and anti-corrosion protection make this tubing an excellent choice for automotive wiring harnesses, marine cables, boat wiring, trailer connectors, and any environment exposed to vibration, moisture, or salt spray.\"}}]}\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:\/\/0i45ne-c8.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Fasteners \u0026 Electrical\", \"item\": \"https:\/\/0i45ne-c8.myshopify.com\/collections\/fasteners-electrical\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"1m 4:1 Heat Shrink Tubing – Waterproof \u0026 Anti-Corrosion\", \"item\": \"https:\/\/0i45ne-c8.myshopify.com\/products\/1m-4-1-heat-shrink-tubing-waterproof-anti-corrosion-wire-harness\"}]}\u003c\/script\u003e","brand":"Zpaxo","offers":[{"title":"black \/ 16mm","offer_id":54157848740150,"sku":"100006028:3269250#16mm;14:193","price":47.99,"currency_code":"USD","in_stock":true},{"title":"black \/ 8mm","offer_id":54157848772918,"sku":"100006028:100016941;14:193","price":46.5,"currency_code":"USD","in_stock":true},{"title":"black \/ 6mm","offer_id":54157848805686,"sku":"100006028:100016940;14:193","price":39.26,"currency_code":"USD","in_stock":true},{"title":"black \/ 4mm","offer_id":54157848838454,"sku":"100006028:201336457;14:193","price":39.09,"currency_code":"USD","in_stock":true},{"title":"black \/ 12mm","offer_id":54157848871222,"sku":"100006028:100016944;14:193","price":40.08,"currency_code":"USD","in_stock":true},{"title":"black \/ 20 mm","offer_id":54157848903990,"sku":"100006028:19952726;14:193","price":42.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/7774\/3158\/files\/Sd92011fba2b149e18faf601076697519U.webp?v=1782485110","url":"https:\/\/0i45ne-c8.myshopify.com\/products\/1m-4-1-heat-shrink-tubing-waterproof-anti-corrosion-wire-harness","provider":"Zpaxo","version":"1.0","type":"link"}