Food Grade Silicone Tubing – Flexible Soft Silicone Hose ID 1mm–25mm, 14 Colors

Match the inner diameter (ID) to the outer diameter of the fitting or barb it will slip over. For example, a 6mm OD barb typically needs a 6mm ID tube. If you need a snug, leak-resistant fit, choose an ID equal to or 0.5–1mm smaller than the fitting OD — silicone's elasticity will create a seal. The OD listed in the variant name is the tube's outer dimension; wall thickness = (OD − ID) ÷ 2.

Common inch equivalents: 4mm ID ≈ 5/32", 6mm ID ≈ 1/4", 8mm ID ≈ 5/16", 10mm ID ≈ 3/8", 12mm ID ≈ 15/32", 16mm ID ≈ 5/8", 25mm ID ≈ 1".

Food-grade silicone tubing generally handles continuous temperatures from -60°C (-76°F) up to 200°C (392°F). Short-term peaks up to approximately 230°C are typically tolerated. This makes it suitable for hot-side brewing transfer lines, autoclave connections, and steam-adjacent plumbing where rubber or PVC would soften or crack.

Yes. This tubing is made from food-grade silicone (silica gel) that is odor-free, taste-neutral, and non-toxic. It does not leach plasticizers the way PVC tubing can. It is commonly used in homebrewing, aquariums, peristaltic pumps, and laboratory fluid transfer. If your application requires a specific certification (e.g., FDA 21 CFR, NSF), please contact us to confirm.

Silicone is generally more UV-resistant than rubber or PVC, making it suitable for outdoor use in most climates. However, prolonged direct UV exposure over many years can cause surface chalking or minor degradation. For permanent outdoor installations, a UV-protective sleeve or shading is recommended to extend service life.

The first number is the inner diameter (ID) — the bore that contacts your fluid or fits over a barb. The second number is the outer diameter (OD). The difference between OD and ID divided by 2 gives you the wall thickness. A 4×6 tube has a 1mm wall; a 4×8 tube has a 2mm wall and is stiffer and more pressure-resistant. Choose a thicker wall when you need higher burst pressure or more rigidity.

Working pressure depends on wall thickness and diameter. Thicker-walled variants (e.g., 4×8, 6×10) generally handle higher pressures than thin-walled ones. For gravity-fed or low-pressure systems (typically under 30 PSI), most sizes are suitable. For higher-pressure applications, please contact us with your specific size and pressure requirement so we can confirm suitability.

Yes. Silicone tubing works well with standard barb fittings — the elasticity creates a tight seal. For pressurized connections, a worm-drive hose clamp over the barb is recommended. Ensure the clamp is sized for the OD of the tubing, not the ID. Avoid over-tightening, which can cut into the silicone wall.