{"product_id":"4-1-heat-shrink-tubing-adhesive-glue-lined-waterproof","title":"4:1 Heat Shrink Tubing with Adhesive Glue Lined — Waterproof Wire Sleeve","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003e4:1 Adhesive-Lined Heat Shrink Tubing — Waterproof Dual-Wall Wire Sleeve\u003c\/h2\u003e\n\u003cp\u003eWhen a standard heat shrink tube just won't cut it — connectors that pull loose, splices that let moisture in, or wiring harnesses that chafe and fail — you need a dual-wall solution. This 4:1 heat shrink tubing with adhesive glue lining is built for electricians, automotive enthusiasts, marine riggers, and serious DIYers who need a reliable, waterproof seal the first time.\u003c\/p\u003e\n\u003cp\u003eEach piece is a dual-wall tube: a flexible polyolefin outer jacket over a hot-melt adhesive inner lining. Available in diameters from 4mm (≈5\/32\") to 40mm (≈1-9\/16\"), each piece is 20cm (≈7.9\") long and sold individually so you only buy what you need. Colors include White, Clear, Black, and Red for easy circuit identification or color-coding.\u003c\/p\u003e\n\u003cp\u003eTypical applications include waterproofing automotive wire splices and ring terminals, sealing marine and RV electrical connections against moisture, protecting battery cable ends and Anderson connector leads, and adding strain relief to multi-pin harness exits — all scenarios where a tight, adhesive-bonded sleeve makes the difference between a lasting repair and a repeat failure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔌\u003c\/span\u003e \u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits cables, wires, and connectors with an outer diameter within the tubing's supplied inner diameter. Suitable for automotive, marine, RV, solar, and general electrical wiring. Shrink ratio 4:1 — select a size whose recovered diameter is smaller than your cable OD for a secure seal.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-note\"\u003e\n\u003cspan class=\"hdiy-note-icon\"\u003e⚠️\u003c\/span\u003e \u003cstrong\u003eSize tip:\u003c\/strong\u003e Measure your cable or connector OD before ordering. If you are unsure which diameter to choose, refer to the size selection FAQ below or contact us to confirm.\u003c\/div\u003e\n\u003ch2\u003e✅ Key Features of These 4:1 Adhesive-Lined Heat Shrink Tubes\u003c\/h2\u003e\n\u003cul class=\"hdiy-features\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e💧\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eWaterproof Adhesive Inner Lining\u003c\/strong\u003e — The hot-melt glue layer flows into gaps when heated, creating a moisture-resistant seal ideal for outdoor wiring and marine cable protection.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔥\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e4:1 Shrink Ratio\u003c\/strong\u003e — Shrinks to one-quarter of its supplied diameter, conforming tightly around connectors, irregular shapes, and stepped cable transitions that 2:1 tubing cannot cover.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎨\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFour Color Options\u003c\/strong\u003e — Available in White, Clear, Black, and Red for circuit identification, color-coded wiring harnesses, or discreet blending with existing cable runs.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eWide Diameter Range\u003c\/strong\u003e — Sizes from 4mm (≈5\/32\") to 40mm (≈1-9\/16\") cover everything from thin signal wires to large battery cables and multi-pin connector housings.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eStrain Relief \u0026amp; Mechanical Protection\u003c\/strong\u003e — Once cooled, the hardened adhesive bonds to the cable jacket, resisting pull-out forces and reducing flex fatigue at connection points in automotive and industrial wiring.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e✂️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eCut-to-Length Flexibility\u003c\/strong\u003e — Each piece is 20cm (≈7.9\") long and can be trimmed to any shorter length, giving you precise coverage without waste on butt splices, ring terminals, or wire repair sleeves.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📐 Technical Specifications — Dual-Wall Adhesive Heat Shrink Tubing\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eDual-wall adhesive-lined heat shrink tubing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShrink Ratio\u003c\/th\u003e\n\u003ctd\u003e4:1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAvailable Diameters\u003c\/th\u003e\n\u003ctd\u003e4mm (≈5\/32\"), 6mm (≈15\/64\"), 8mm (≈5\/16\"), 12mm (≈15\/32\"), 16mm (≈5\/8\"), 20mm (≈25\/32\"), 24mm (≈15\/16\"), 32mm (≈1-1\/4\"), 40mm (≈1-9\/16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength per Piece\u003c\/th\u003e\n\u003ctd\u003e20cm (≈7.9\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Wall Material\u003c\/th\u003e\n\u003ctd\u003ePolyolefin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInner Lining\u003c\/th\u003e\n\u003ctd\u003eHot-melt adhesive (glue-lined)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColors Available\u003c\/th\u003e\n\u003ctd\u003eWhite, Clear, Black, Red\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eActivation Temperature\u003c\/th\u003e\n\u003ctd\u003eTypically 120–135°C (248–275°F) — see variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Tool\u003c\/th\u003e\n\u003ctd\u003eHeat gun (open flame with caution)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical Applications\u003c\/th\u003e\n\u003ctd\u003eAutomotive wiring, marine connections, solar cable splices, battery terminals, wire harness strain relief\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Size\u003c\/th\u003e\n\u003ctd\u003e1 Piece (sold individually)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWaterproof Rating\u003c\/th\u003e\n\u003ctd\u003eMoisture-resistant seal when fully shrunk — contact us to confirm for submerged use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right diameter for my wire or cable?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the outer diameter of your cable or connector before shrinking. Choose a tubing size whose recovered (shrunken) inner diameter is slightly smaller than your cable OD for a snug seal. For example, 6mm tubing typically recovers to around 1.5mm, so it suits cables up to about 5mm OD. When in doubt, size up — you can always apply more heat gradually. If you need help selecting, contact us with your cable OD and we'll recommend the right size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does the 4:1 shrink ratio mean?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eA 4:1 shrink ratio means the tubing shrinks to one-quarter of its original supplied diameter when heat is applied. This makes it suitable for covering connectors, splices, or irregular shapes that standard 2:1 tubing cannot conform to tightly. For example, a 20mm tube will generally recover to approximately 5mm — though exact recovered dimensions may vary slightly by batch.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow strong is the seal — can it handle mechanical stress?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe dual-wall construction — a polyolefin outer layer plus a hot-melt adhesive inner lining — generally provides a firm mechanical bond once cooled. The adhesive flows into gaps and hardens, creating a strain-relief effect that resists pull-out and vibration in most DIY and light-industrial applications. For high-vibration environments such as engine bays, ensure the tubing is fully shrunk and the adhesive has fully set before flexing the cable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this heat shrink tubing waterproof and suitable for outdoor use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. The adhesive inner lining melts and flows to fill voids, creating a moisture-resistant seal around the cable. It is generally suitable for outdoor wiring, marine connections, and automotive harnesses where moisture ingress is a concern. For fully submerged or high-pressure water exposure, contact us to confirm suitability for your specific application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat connector or cable standards is this compatible with?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThis tubing is not thread-specific — it is designed to sleeve over cables, wires, and connectors of various standards. It is compatible with common connector types including Anderson connectors, ring terminals, butt splices, and multi-pin housings, provided the connector OD falls within the tubing's supplied inner diameter range. It works with both metric and imperial cable sizes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat temperature is needed to shrink this tubing, and what tools can I use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eDual-wall adhesive-lined tubing typically requires a higher activation temperature than standard tubing — generally around 120–135°C (248–275°F) to fully activate the adhesive. A heat gun is strongly recommended for even heat distribution. An open flame can be used with caution but may scorch the outer jacket before the adhesive fully flows. Keep the heat source moving to avoid hot spots.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use this on automotive or marine wiring?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes, adhesive-lined heat shrink tubing is widely used in automotive and marine wiring repairs. The waterproof seal helps protect connections from road salt, fuel vapors, and bilge moisture. Ensure the wire gauge and connector OD fall within the selected tubing size's recovery range before installation. It is also commonly used for solar panel wiring, RV electrical systems, and trailer harness repairs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your diameter and color above, then add to cart — ships from our US warehouse.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"4mm \/ White \/ 1 Piece","offer_id":52329739714834,"sku":"ZXCGZYYSG0574x1","price":4.69,"currency_code":"USD","in_stock":true},{"title":"6mm \/ White \/ 1 Piece","offer_id":52329739747602,"sku":"ZXCGZYYSG0575x1","price":4.91,"currency_code":"USD","in_stock":true},{"title":"8mm \/ White \/ 1 Piece","offer_id":52329739780370,"sku":"ZXCGZYYSG0576x1","price":5.13,"currency_code":"USD","in_stock":true},{"title":"12mm \/ White \/ 1 Piece","offer_id":52329739813138,"sku":"ZXCGZYYSG0577x1","price":5.58,"currency_code":"USD","in_stock":true},{"title":"16mm \/ White \/ 1 Piece","offer_id":52329739845906,"sku":"ZXCGZYYSG0578x1","price":6.11,"currency_code":"USD","in_stock":true},{"title":"20mm \/ White \/ 1 Piece","offer_id":52329739878674,"sku":"ZXCGZYYSG0579x1","price":6.9,"currency_code":"USD","in_stock":true},{"title":"4mm \/ Clear \/ 1 Piece","offer_id":52329739911442,"sku":"ZXCGZYYSG0580x1","price":4.69,"currency_code":"USD","in_stock":true},{"title":"6mm \/ Clear \/ 1 Piece","offer_id":52329739944210,"sku":"ZXCGZYYSG0581x1","price":4.91,"currency_code":"USD","in_stock":true},{"title":"8mm \/ Clear \/ 1 Piece","offer_id":52329739976978,"sku":"ZXCGZYYSG0582x1","price":5.13,"currency_code":"USD","in_stock":true},{"title":"12mm \/ Clear \/ 1 Piece","offer_id":52329740009746,"sku":"ZXCGZYYSG0583x1","price":5.58,"currency_code":"USD","in_stock":true},{"title":"16mm \/ Clear \/ 1 Piece","offer_id":52329740042514,"sku":"ZXCGZYYSG0584x1","price":6.11,"currency_code":"USD","in_stock":true},{"title":"20mm \/ Clear \/ 1 Piece","offer_id":52329740075282,"sku":"ZXCGZYYSG0585x1","price":6.9,"currency_code":"USD","in_stock":true},{"title":"4mm \/ Black \/ 1 Piece","offer_id":52329740108050,"sku":"ZXCGZYYSG0588x1","price":4.69,"currency_code":"USD","in_stock":true},{"title":"6mm \/ Black \/ 1 Piece","offer_id":52329740140818,"sku":"ZXCGZYYSG0589x1","price":4.91,"currency_code":"USD","in_stock":true},{"title":"8mm \/ Black \/ 1 Piece","offer_id":52329740173586,"sku":"ZXCGZYYSG0590x1","price":5.13,"currency_code":"USD","in_stock":true},{"title":"12mm \/ Black \/ 1 Piece","offer_id":52329740206354,"sku":"ZXCGZYYSG0591x1","price":5.58,"currency_code":"USD","in_stock":true},{"title":"16mm \/ Black \/ 1 Piece","offer_id":52329740239122,"sku":"ZXCGZYYSG0592x1","price":6.01,"currency_code":"USD","in_stock":true},{"title":"20mm \/ Black \/ 1 Piece","offer_id":52329740271890,"sku":"ZXCGZYYSG0593x1","price":6.64,"currency_code":"USD","in_stock":true},{"title":"24mm \/ Black \/ 1 Piece","offer_id":52329740304658,"sku":"ZXCGZYYSG0594x1","price":7.17,"currency_code":"USD","in_stock":true},{"title":"32mm \/ Black \/ 1 Piece","offer_id":52329740337426,"sku":"ZXCGZYYSG0595x1","price":7.41,"currency_code":"USD","in_stock":true},{"title":"40mm \/ Black \/ 1 Piece","offer_id":52329740370194,"sku":"ZXCGZYYSG0596x1","price":9.0,"currency_code":"USD","in_stock":true},{"title":"4mm \/ Red \/ 1 Piece","offer_id":52329740402962,"sku":"ZXCGZYYSG0597x1","price":4.69,"currency_code":"USD","in_stock":true},{"title":"6mm \/ Red \/ 1 Piece","offer_id":52329740435730,"sku":"ZXCGZYYSG0598x1","price":4.91,"currency_code":"USD","in_stock":true},{"title":"8mm \/ Red \/ 1 Piece","offer_id":52329740468498,"sku":"ZXCGZYYSG0599x1","price":5.13,"currency_code":"USD","in_stock":true},{"title":"12mm \/ Red \/ 1 Piece","offer_id":52329740501266,"sku":"ZXCGZYYSG0600x1","price":5.58,"currency_code":"USD","in_stock":true},{"title":"16mm \/ Red \/ 1 Piece","offer_id":52329740534034,"sku":"ZXCGZYYSG0601x1","price":6.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-04_1_df065945-dfaa-4d78-9b53-5786832131d2.jpg?v=1780565335","url":"https:\/\/homediyer.com\/products\/4-1-heat-shrink-tubing-adhesive-glue-lined-waterproof","provider":"HomeDIYer","version":"1.0","type":"link"}