Food Grade Silicone Flexible Tubing — Flexible, Heat-Resistant Hose for DIY & Industrial Use
When standard vinyl or rubber hose fails under heat, chemicals, or repeated flexing, food grade silicone flexible tubing is the reliable alternative that DIYers, homebrewers, aquarium builders, and lab technicians reach for. This listing covers inner diameters of 3mm and 4mm (approximately 0.12"–0.16" ID), with outer diameters ranging from 4mm to 10mm depending on the wall thickness variant selected.
Each length is cut from solid silicone extrusion — a material known for its wide service temperature range (typically –60°C to +200°C / –76°F to +392°F), non-toxic composition, and resistance to ozone, UV, and many common chemicals. Available in a wide range of colors including high-transparency, red, black, blue, green, yellow, pink, purple, and more, in lengths of 1 m, 3 m, and 5 m.
Typical applications include food-grade silicone tubing for homebrewing and winemaking, aquarium airline and CO₂ tubing, peristaltic pump lines, laboratory fluid transfer, and low-pressure pneumatic connections where a soft, kink-resistant hose is needed.
⚠️ Compatibility note: Inner diameter (ID) determines fit over barbed fittings. Match your barb OD to the tubing ID. Wall thickness affects flexibility — thinner walls bend more easily; thicker walls hold shape under pressure. See variant options for exact ID × OD combinations.
✅ Key Features of These Food Grade Silicone Flexible Tubing Hoses
🌡️ Wide Temperature Range
Rated for continuous use from –60°C to +200°C (–76°F to +392°F), making it suitable for both cold-water aquarium lines and hot-side brewing transfers.
🍺 Food-Safe & Odor-Free
Made from platinum-cured silicone that does not leach plasticizers or impart taste or odor — safe for direct contact with beverages, food liquids, and potable water.
🔄 Flexible & Kink-Resistant
Soft silicone wall flexes around tight bends without collapsing, maintaining consistent flow even in confined equipment layouts.
🎨 Multiple Colors & Sizes
Available in 17 colors and 9 ID × OD combinations (3mm × 4mm up to 4mm × 10mm), allowing color-coding of fluid lines in multi-circuit systems.
✂️ Cut-to-Length Options
Choose 1 m, 3 m, or 5 m lengths to minimize waste. Silicone cuts cleanly with scissors or a utility knife — no special tools required.
🧪 Chemical & UV Resistance
Resists ozone, UV radiation, dilute acids, and alkalis. Does not harden or crack with age the way standard rubber hose does.
📐 Technical Specifications — Silicone Flexible Tubing
| Material |
Platinum-cured food grade silicone |
| Inner Diameter (ID) |
See variant options (3mm or 4mm) |
| Outer Diameter (OD) |
See variant options (4mm – 10mm) |
| Wall Thickness |
See variant options (typically 0.5mm – 3mm) |
| Available Lengths |
1 Metre / 3 Metre / 5 Metre |
| Temperature Range |
–60°C to +200°C (–76°F to +392°F) |
| Color Options |
High transparency, Red, Black, Blue, Green, Yellow, Pink, Purple, White, Sky blue, Dark blue, Bright green, Light green, Orange, Orange red, Lake blue, Transparent red |
| Hardness |
Typically 40–60 Shore A (soft, flexible) |
| Pressure Rating |
Contact us to confirm (varies by wall thickness) |
| Food Safety |
Food grade; non-toxic, odor-free |
| Product Type |
Rubber / Silicone Pipe |
❓ Frequently Asked Questions
How do I choose the right inner diameter for my barbed fitting?
Measure the outer diameter (OD) of your barb. For a secure, leak-resistant seal, select tubing whose ID is equal to or slightly smaller than the barb OD — silicone stretches to grip the barb. For example, a 4mm barb pairs well with 3mm or 4mm ID tubing depending on how tight a fit you need.
What is the maximum temperature this silicone tubing can handle?
This tubing is rated for continuous service up to +200°C (+392°F) and down to –60°C (–76°F). Short-term peaks slightly above 200°C are generally tolerated, but sustained exposure above that threshold may reduce service life. It is not suitable for steam sterilization above 134°C without confirming the specific variant's rating.
Is this tubing safe for use with drinking water or food liquids?
Yes. The tubing is made from platinum-cured silicone, which is non-toxic, odor-free, and does not leach plasticizers. It is widely used in homebrewing, winemaking, and food processing applications. If your application requires a specific regulatory certification (e.g., FDA, NSF), please contact us to confirm before ordering.
Can I use this tubing for aquarium CO₂ or airline systems?
Yes. The 3mm ID variants are commonly used as aquarium CO₂ diffuser lines and airline tubing. Silicone is slightly more gas-permeable than rigid plastic, which is acceptable for most aquarium CO₂ setups. For high-pressure CO₂ regulators, verify the working pressure against the wall thickness of the variant you select.
How does wall thickness affect performance?
Thinner walls (e.g., 3mm ID × 4mm OD = 0.5mm wall) produce a very soft, highly flexible hose that bends easily in tight spaces. Thicker walls (e.g., 3mm ID × 7mm OD = 2mm wall) provide more structural rigidity, better kink resistance under pressure, and a higher burst pressure. Choose thinner walls for peristaltic pumps and aquarium lines; choose thicker walls for pressurized fluid transfer.
Will the color affect the material properties or food safety?
No. All color variants use the same base silicone compound; pigments used in food-grade silicone are inert and do not affect chemical resistance, temperature rating, or food safety. The high-transparency variant contains no pigment and is useful when you need to visually monitor flow inside the tube.
How do I cut the tubing to length cleanly?
Silicone cuts cleanly with sharp scissors, a utility knife, or a razor blade. For the straightest cut, mark the cut line with a marker, lay the tube on a flat surface, and cut in a single firm stroke. No heat or special tools are needed. The cut end can be pushed directly onto a barb fitting without deburring.
🛒 Select your colour, diameter (ID × OD), and length above, then add to cart.
