{"product_id":"red-food-grade-silicone-capillary-tube-hose-id-03mm-4mm","title":"Red Food Grade Silicone Capillary Tube — ID 0.3mm to 4mm, 10 Meter","description":"\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right ID and OD for my application?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the Inner Diameter (ID) to the outer diameter of the fitting or nozzle the tube will slip over or connect to. The Outer Diameter (OD) determines how the tube fits inside a housing or clamp. For example, a 2mm x 4mm tube has a 1mm wall thickness on each side. When in doubt, size up — a slightly larger ID is easier to work with than one that's too tight.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What pressure can this silicone tubing handle?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Silicone tubing in these capillary sizes is generally rated for low-to-moderate pressure applications. For micro-bore sizes (ID under 1mm), working pressure is typically under 30 PSI. Larger sizes (ID 2mm–4mm) can generally handle up to 60–80 PSI depending on wall thickness. Contact us to confirm for your specific use case.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this tubing safe for food and beverage contact?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. This tubing is made from food-grade silicone, which is generally non-toxic, odorless, and tasteless. It is commonly used in beverage dispensing, homebrewing, and food processing lines. It does not impart flavor or odor to liquids passing through it.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use this tubing outdoors or in high-temperature environments?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Silicone is inherently UV-resistant and performs well outdoors. It typically handles temperatures from approximately -60°C (-76°F) to +200°C (+392°F), making it suitable for both cold-water aquarium lines and moderate-heat applications. Avoid prolonged exposure to steam above 150°C for extended periods.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What fittings or connectors are compatible with this tubing?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This tubing is compatible with standard barbed fittings, luer-lock connectors, and push-fit adapters sized to match the ID. For micro-bore sizes (ID 0.3mm–1mm), luer-slip or blunt-tip dispensing needles are commonly used. Always verify the barb OD matches the tube ID for a secure, leak-free connection.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I cut the tubing cleanly without crushing the bore?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Use a sharp razor blade or dedicated tubing cutter rather than scissors, which can compress the soft silicone and deform the bore. For micro-bore sizes, a single clean slice perpendicular to the tube axis gives the best result. Avoid sawing motions.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is this tubing suitable for peristaltic pumps?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Soft silicone is one of the most common materials used in peristaltic pump heads because it rebounds quickly after compression. Select the ID and OD that match your pump head's channel dimensions. Most lab-grade peristaltic pumps specify tubing by ID and wall thickness — check your pump manual for the exact size.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003cdiv class=\"hdiy-desc\"\u003e\n\n  \u003cdiv class=\"hdiy-overview\"\u003e\n    \u003ch2\u003eRed Food Grade Silicone Capillary Tube — Precision Bore for Micro-Flow Applications\u003c\/h2\u003e\n    \u003cp\u003eWhen your project demands a flexible, chemically inert tube in a very small bore — whether you're routing fluid through a peristaltic pump, building a custom aquarium CO₂ line, or plumbing a lab instrument — standard hardware-store tubing simply doesn't come in the sizes you need. This red food grade silicone capillary tube is stocked in 28 ID × OD combinations ranging from 0.3mm × 0.8mm up to 4mm × 6mm (≈0.012\" × 0.031\" to ≈0.157\" × 0.236\"), so you can match the exact bore your fitting or pump head requires.\u003c\/p\u003e\n    \u003cp\u003eEach listing covers a 10-meter (≈32.8 ft) continuous length of soft silicone tubing. The wall thickness across the range is typically 0.25mm–1mm depending on the size selected. The red color makes it easy to distinguish fluid lines in multi-tube setups. All sizes share the same food-safe silicone compound — non-toxic, odorless, and free of BPA and phthalates.\u003c\/p\u003e\n    \u003cp\u003eTypical use cases include aquarium CO₂ diffuser lines and airline tubing, peristaltic pump replacement tubing for lab and medical devices, homebrewing and beverage dispensing micro-lines, precision dosing and drip irrigation capillary runs, and DIY electronics cooling or pneumatic micro-circuits.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-compat\"\u003e\n    \u003cspan class=\"hdiy-compat-icon\"\u003e🔗\u003c\/span\u003e\n    Compatible with standard barbed fittings, luer-lock connectors, blunt-tip dispensing needles, and push-fit adapters — select the ID that matches your fitting's barb OD for a secure seal.\n  \u003c\/div\u003e\n\n  \u003cul class=\"hdiy-features\"\u003e\n    \u003ch2\u003e✅ Key Features of These Food Grade Silicone Capillary Tubes\u003c\/h2\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🍎\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eFood-Safe Silicone Compound\u003c\/strong\u003e — Non-toxic, odorless, and tasteless; safe for direct contact with drinking water, beverages, and food-processing lines without leaching chemicals or imparting flavor.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e28 Precision ID × OD Sizes\u003c\/strong\u003e — Bore options from 0.3mm to 4mm inner diameter let you match the exact capillary dimension your pump head, fitting, or instrument port requires, eliminating adapters and reducing leak points.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🌡️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eWide Temperature Range\u003c\/strong\u003e — Silicone remains flexible and stable from approximately -60°C (-76°F) to +200°C (+392°F), making these tubes suitable for cold aquarium lines, warm beverage dispensers, and moderate-heat lab applications.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003ePeristaltic Pump Compatible\u003c\/strong\u003e — The soft, resilient silicone wall rebounds quickly after roller compression, making this tubing a direct-fit replacement for many lab-grade and aquarium peristaltic pump heads.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e☀️\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003eUV \u0026amp; Ozone Resistant\u003c\/strong\u003e — Unlike PVC or latex tubing, silicone does not crack, stiffen, or discolor with UV exposure, so outdoor aquarium setups and greenhouse drip lines stay flexible season after season.\u003c\/span\u003e\n\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e10-Meter Continuous Length\u003c\/strong\u003e — Each order ships as a single uncut 10m coil, giving you enough material to route, trim, and test without splicing mid-run — ideal for aquarium CO₂ lines, dosing systems, and lab instrument plumbing.\u003c\/span\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003e📐 Technical Specifications — Silicone Capillary Tube\u003c\/h2\u003e\n  \u003cdiv class=\"hdiy-table-wrap\"\u003e\n    \u003ctable\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eFood-grade silicone rubber\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eInner Diameter (ID) Range\u003c\/th\u003e\n\u003ctd\u003e0.3mm – 4mm (≈0.012\" – 0.157\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eOuter Diameter (OD) Range\u003c\/th\u003e\n\u003ctd\u003e0.8mm – 6mm (≈0.031\" – 0.236\")\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eWall Thickness\u003c\/th\u003e\n\u003ctd\u003eTypically 0.25mm – 1mm (varies by size selected)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eLength per Order\u003c\/th\u003e\n\u003ctd\u003e10 Meter (≈32.8 ft) continuous coil\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eAvailable Sizes (ID × OD)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eTemperature Range\u003c\/th\u003e\n\u003ctd\u003eApprox. -60°C to +200°C (-76°F to +392°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eHardness\u003c\/th\u003e\n\u003ctd\u003eTypically Shore A 40–60 (soft, flexible)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eFood Safety\u003c\/th\u003e\n\u003ctd\u003eFood-grade compound; BPA-free, phthalate-free\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eUV \/ Ozone Resistance\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003ePressure Rating\u003c\/th\u003e\n\u003ctd\u003eContact us to confirm for your specific size\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCompatible Fittings\u003c\/th\u003e\n\u003ctd\u003eBarbed fittings, luer-lock, blunt-tip needles, push-fit adapters\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-faq\"\u003e\n    \u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I choose the right ID and OD for my application?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eMatch the Inner Diameter (ID) to the outer diameter of the fitting or nozzle the tube will slip over or connect to. The Outer Diameter (OD) determines how the tube fits inside a housing or clamp. For example, a 2mm × 4mm tube has a 1mm wall on each side. When in doubt, size up slightly — a marginally larger ID is easier to work with than one that's too tight. If you need an inch equivalent: 1mm ≈ 0.039\", so a 3mm ID ≈ 0.118\" (close to 1\/8\").\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat pressure can this silicone tubing handle?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eSilicone capillary tubing in these sizes is generally suited for low-to-moderate pressure. Micro-bore sizes (ID under 1mm) typically handle under 30 PSI; larger sizes (ID 2mm–4mm) can generally manage 60–80 PSI depending on wall thickness. For pressure-critical applications, contact us to confirm the rating for your specific ID × OD combination.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs this tubing safe for food and beverage contact?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes. This tubing is made from a food-grade silicone compound that is generally non-toxic, odorless, and tasteless. It is commonly used in homebrewing, beverage dispensing, and food-processing micro-lines. It does not impart flavor or odor to liquids passing through it and is free of BPA and phthalates.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use this tubing outdoors or in high-temperature environments?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes. Silicone is inherently UV- and ozone-resistant, so it stays flexible outdoors without cracking or stiffening. It typically performs from approximately -60°C (-76°F) to +200°C (+392°F). For continuous steam or autoclave use above 150°C, contact us to confirm suitability for your specific size and wall thickness.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat fittings or connectors are compatible with this tubing?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eThis tubing works with standard barbed fittings, luer-lock and luer-slip connectors, blunt-tip dispensing needles, and push-fit adapters. For micro-bore sizes (ID 0.3mm–1mm), blunt-tip dispensing needles or luer-slip adapters are the most common connection method. Always verify the barb OD matches the tube ID for a secure, leak-free fit.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs this tubing suitable for peristaltic pumps?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eYes — soft silicone is one of the most widely used materials in peristaltic pump heads because it rebounds quickly after roller compression without fatigue cracking. Select the ID and OD that match your pump head's channel dimensions. Most lab-grade and aquarium peristaltic pumps specify tubing by ID and wall thickness; check your pump manual for the exact size needed.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I cut the tubing cleanly without deforming the bore?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eUse a sharp razor blade or dedicated tubing cutter rather than scissors, which can compress the soft silicone and collapse the bore — especially critical for micro-bore sizes under 1mm ID. Make a single clean slice perpendicular to the tube axis. Avoid sawing motions. For very small bores, a fresh single-edge razor blade gives the cleanest cut.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I select between sizes that look similar, like 2mm × 3mm vs. 2mm × 4mm?\u003c\/summary\u003e\n      \u003cdiv class=\"hdiy-faq-body\"\u003e\n        \u003cp\u003eBoth have the same 2mm inner bore, but the 2mm × 4mm has a thicker wall (1mm vs. 0.5mm per side). Choose the thicker wall when you need more crush resistance in a peristaltic pump or higher pressure tolerance. Choose the thinner wall when the tube must fit inside a tight housing or when flexibility is the priority. The ID — not the OD — determines flow capacity.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"hdiy-cta\"\u003e\n    🛒 Select your ID × OD size above, then add to cart — ships from our US warehouse.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"HomeDIYer","offers":[{"title":"0.3mm x 0.8mm \/ 10 Meter","offer_id":52333048627474,"sku":"XYHGY2603-VKK17-001x1","price":3.88,"currency_code":"USD","in_stock":true},{"title":"0.5mm x 1mm \/ 10 Meter","offer_id":52333048660242,"sku":"XYHGY2603-VKK17-002x1","price":3.2,"currency_code":"USD","in_stock":true},{"title":"0.5mm x 1.5mm \/ 10 Meter","offer_id":52333048693010,"sku":"XYHGY2603-VKK17-003x1","price":3.2,"currency_code":"USD","in_stock":true},{"title":"0.5mm x 2mm \/ 10 Meter","offer_id":52333048725778,"sku":"XYHGY2603-VKK17-004x1","price":4.07,"currency_code":"USD","in_stock":true},{"title":"0.6mm x 1.6mm \/ 10 Meter","offer_id":52333048758546,"sku":"XYHGY2603-VKK17-005x1","price":3.79,"currency_code":"USD","in_stock":true},{"title":"0.7mm x 1.7mm \/ 10 Meter","offer_id":52333048791314,"sku":"XYHGY2603-VKK17-006x1","price":3.79,"currency_code":"USD","in_stock":true},{"title":"0.8mm x 1.9mm \/ 10 Meter","offer_id":52333048824082,"sku":"XYHGY2603-VKK17-007x1","price":3.6,"currency_code":"USD","in_stock":true},{"title":"0.9mm x 1.9mm \/ 10 Meter","offer_id":52333048856850,"sku":"XYHGY2603-VKK17-008x1","price":3.79,"currency_code":"USD","in_stock":true},{"title":"1mm x 1.5mm \/ 10 Meter","offer_id":52333048889618,"sku":"XYHGY2603-VKK17-009x1","price":4.2,"currency_code":"USD","in_stock":true},{"title":"1mm x 2mm \/ 10 Meter","offer_id":52333048922386,"sku":"XYHGY2603-VKK17-010x1","price":3.6,"currency_code":"USD","in_stock":true},{"title":"1mm x 3mm \/ 10 Meter","offer_id":52333048955154,"sku":"XYHGY2603-VKK17-011x1","price":6.11,"currency_code":"USD","in_stock":true},{"title":"1.2mm x 2.2mm \/ 10 Meter","offer_id":52333048987922,"sku":"XYHGY2603-VKK17-012x1","price":3.93,"currency_code":"USD","in_stock":true},{"title":"1.3mm x 2.3mm \/ 10 Meter","offer_id":52333049020690,"sku":"XYHGY2603-VKK17-013x1","price":3.88,"currency_code":"USD","in_stock":true},{"title":"1.4mm x 2.4mm \/ 10 Meter","offer_id":52333049053458,"sku":"XYHGY2603-VKK17-014x1","price":3.93,"currency_code":"USD","in_stock":true},{"title":"1.5mm x 2.5mm \/ 10 Meter","offer_id":52333049086226,"sku":"XYHGY2603-VKK17-015x1","price":3.93,"currency_code":"USD","in_stock":true},{"title":"1.5mm x 3mm \/ 10 Meter","offer_id":52333049118994,"sku":"XYHGY2603-VKK17-016x1","price":4.88,"currency_code":"USD","in_stock":true},{"title":"1.6mm x 3.2mm \/ 10 Meter","offer_id":52333049151762,"sku":"XYHGY2603-VKK17-017x1","price":5.51,"currency_code":"USD","in_stock":true},{"title":"1.8mm x 3mm \/ 10 Meter","offer_id":52333049184530,"sku":"XYHGY2603-VKK17-018x1","price":4.47,"currency_code":"USD","in_stock":true},{"title":"2mm x 3mm \/ 10 Meter","offer_id":52333049217298,"sku":"XYHGY2603-VKK17-019x1","price":4.69,"currency_code":"USD","in_stock":true},{"title":"2mm x 4mm \/ 10 Meter","offer_id":52333049250066,"sku":"XYHGY2603-VKK17-020x1","price":7.47,"currency_code":"USD","in_stock":true},{"title":"2.2mm x 3.2mm \/ 10 Meter","offer_id":52333049282834,"sku":"XYHGY2603-VKK17-021x1","price":5.92,"currency_code":"USD","in_stock":true},{"title":"2.5mm x 3.5mm \/ 10 Meter","offer_id":52333049315602,"sku":"XYHGY2603-VKK17-022x1","price":6.32,"currency_code":"USD","in_stock":true},{"title":"2.5mm x 4mm \/ 10 Meter","offer_id":52333049348370,"sku":"XYHGY2603-VKK17-023x1","price":6.51,"currency_code":"USD","in_stock":true},{"title":"3mm x 4mm \/ 10 Meter","offer_id":52333049381138,"sku":"XYHGY2603-VKK17-024x1","price":5.1,"currency_code":"USD","in_stock":true},{"title":"3mm x 5mm \/ 10 Meter","offer_id":52333049413906,"sku":"XYHGY2603-VKK17-025x1","price":8.83,"currency_code":"USD","in_stock":true},{"title":"3mm x 6mm \/ 10 Meter","offer_id":52333049446674,"sku":"XYHGY2603-VKK17-026x1","price":14.27,"currency_code":"USD","in_stock":true},{"title":"4mm x 5mm \/ 10 Meter","offer_id":52333049479442,"sku":"XYHGY2603-VKK17-027x1","price":6.32,"currency_code":"USD","in_stock":true},{"title":"4mm x 6mm \/ 10 Meter","offer_id":52333049512210,"sku":"XYHGY2603-VKK17-028x1","price":10.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture2of38_a16a2a1a-3d44-4429-b7fd-70f2c0fac91f.jpg?v=1781338137","url":"https:\/\/homediyer.com\/products\/red-food-grade-silicone-capillary-tube-hose-id-03mm-4mm","provider":"HomeDIYer","version":"1.0","type":"link"}