Clear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mm
Clear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mm
Clear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mm
Clear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mm
Clear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mm
Clear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mm
Clear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mm
Clear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mm
Clear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mm
Clear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mm
Clear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mm
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Clear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mmClear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mmClear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mmClear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mmClear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mmClear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mmClear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mmClear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mmClear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mmClear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mmClear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mm

Clear Silicone Tubing — Flexible Capillary Hose ID 0.3–6mm OD 0.8–9mm

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Beschreibung

Clear Silicone Tubing for Precision Fluid Transfer — Flexible Capillary Hose in 40+ Sizes

Whether you're routing coolant through a tight lab instrument, building a custom aquarium CO₂ system, or replacing cracked rubber hose in a peristaltic pump, finding the exact bore size you need is half the battle. Generic hardware-store tubing rarely comes in the micro diameters that precision work demands — and the wrong wall thickness can mean kinking, leaking, or a fitting that simply won't seal.

This transparent silicone capillary tubing is available in over 40 ID × OD combinations, with inner diameters ranging from 0.3mm (≈0.012") to 6mm (≈0.236") and outer diameters from 0.8mm (≈0.031") to 9mm (≈0.354"). Each listing ships as a continuous roll in your choice of 5m (≈16.4 ft) or 10m (≈32.8 ft). The material is 100% silicone — translucent, odorless, and free of plasticizers — with wall thicknesses that vary by size combination to balance flexibility and structural integrity.

Typical applications include aquarium airline and CO₂ diffuser tubing, peristaltic pump replacement hose, laboratory capillary fluid routing, homebrewing transfer lines, medical device prototyping, and DIY electronics cooling loops where a clear silicone micro tube is needed to monitor flow visually.

ℹ️ Compatibility Note: Size(ID × OD) determines fit. Match the ID to your fitting's outer diameter and confirm the OD clears your housing bore. All sizes listed are nominal — actual dimensions may vary by ±0.05–0.1mm. Select your size and length from the variant dropdowns above.

✅ Key Features of These Clear Silicone Capillary Tubes

  • 🔬Micro-Bore Precision Sizing — Available from 0.3mm ID up to 6mm ID, covering capillary-scale applications that standard tubing suppliers don't stock, including lab instrument routing and micro-dosing systems.
  • 👁️Fully Transparent Wall — The clear silicone construction lets you visually confirm flow, detect air bubbles, and monitor fluid color changes without disconnecting the line — critical for aquarium CO₂ and homebrewing setups.
  • 🌡️Wide Temperature Tolerance — Silicone remains flexible and dimensionally stable from approximately -60°C to +200°C, unlike PVC tubing that stiffens in cold or deforms under heat.
  • 🧪Chemical Resistance for Common Fluids — Resistant to water, dilute acids, alcohols, and aqueous solutions, making this flexible silicone hose suitable for peristaltic pump lines, brewing transfers, and general lab fluid routing.
  • ✂️Cut-to-Length Rolls — Each roll ships as a single continuous length (5m or 10m), so you can cut exactly what each run requires without splicing or wasting pre-cut segments.
  • 🔄Flexible Without Kinking — The silicone compound maintains a tight bend radius without collapsing the bore, which is especially important in compact instrument enclosures and tight aquarium cabinet routing.

📐 Technical Specifications — Silicone Capillary Tubing

Material 100% Silicone (translucent/clear)
Inner Diameter (ID) Range 0.3mm (≈0.012") – 6mm (≈0.236")
Outer Diameter (OD) Range 0.8mm (≈0.031") – 9mm (≈0.354")
Wall Thickness Varies by size — see variant options (typically 0.25mm–1.5mm)
Available Lengths 5m (≈16.4 ft) or 10m (≈32.8 ft) continuous roll
Temperature Range Typically -60°C to +200°C (-76°F to +392°F)
Color / Appearance Transparent / Clear
Flexibility Highly flexible; kink-resistant at rated bend radii
Chemical Compatibility Water, air, dilute acids, alcohols — see variant options; contact us to confirm for specific solvents
Typical Applications Aquarium CO₂ / airline, peristaltic pump hose, lab capillary routing, homebrewing, electronics cooling
Country of Origin China
⚠️ Size Confirmation: With 40+ size combinations available, please double-check your required ID and OD before ordering. If you are unsure, measure your existing tubing or fitting with calipers and contact us — we're happy to help you find the right match.

❓ Frequently Asked Questions

How do I choose the right silicone tube size?

Match the Inner Diameter (ID) to the outer diameter of the fitting or rod it will slide over. The Outer Diameter (OD) determines how much clearance you need in the surrounding structure. For example, a 2 × 4mm tube has a 2mm bore and a 4mm outside diameter (≈5/32" ID, ≈5/32" OD). When in doubt, size up by 0.1–0.2mm to allow for easy insertion without an airtight struggle.

What temperature range can this silicone tubing handle?

Silicone tubing generally withstands temperatures from approximately -60°C (-76°F) to +200°C (+392°F), making it suitable for most lab, aquarium, and light industrial heating applications. For sustained high-heat exposure above 180°C, we recommend confirming suitability with your specific application before committing to a long run.

Is this tubing safe for food or aquarium use?

Transparent silicone tubing is generally considered food-grade and non-toxic, making it widely used in aquariums, homebrewing, and peristaltic pump systems. If your application requires certified food-grade compliance (FDA, NSF), please contact us to confirm the specific grade before ordering.

Can this tubing be used outdoors or in UV-exposed environments?

Silicone is inherently more UV-resistant than PVC or standard rubber tubing and typically holds up well in outdoor settings. However, prolonged direct UV exposure over many years may cause gradual surface degradation. For long-term outdoor installations, shielding the tubing from direct sunlight is generally recommended to extend service life.

What is the difference between ID and OD, and why does it matter?

ID (Inner Diameter) is the bore size — the space fluid or a rod passes through. OD (Outer Diameter) is the total outside width of the tube. Wall thickness equals (OD − ID) ÷ 2. Thicker walls generally provide more pressure resistance and structural rigidity, while thinner walls offer more flexibility and a tighter bend radius.

What fluids or chemicals is this tubing compatible with?

Silicone tubing is generally compatible with water, air, mild acids, alcohols, and many aqueous solutions. It is not recommended for concentrated solvents such as acetone, benzene, or strong oxidizing acids. For specific chemical compatibility questions, contact us to confirm before ordering.

How much pressure can this silicone tubing handle?

Pressure ratings vary by wall thickness and tube diameter. Thicker-walled variants (e.g., 0.5 × 3mm or 2 × 6mm) typically handle higher pressures than thin-walled capillary sizes. For low-pressure fluid transfer and peristaltic pump use, most sizes in this range are generally adequate. Contact us if you need specific burst pressure data for your application.

🛒 Select your size (ID × OD) and length above, then add to cart — ships from our US warehouse.

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