Aquarium Accessories Plastic Hose Barb Fitting Metric Thread Male Connector

Match the barb outer diameter (OD) to the inner diameter (ID) of your flexible tubing. For example, a 6 mm barb is designed for tubing with a 6 mm inner diameter. A slight interference fit is normal and helps create a leak-resistant seal. If you are between sizes, size down for a tighter grip.

The format is Hose Barb OD (mm) – Thread Size. So 6-M8 means a 6 mm hose barb outer diameter paired with an M8 metric male thread. Select the combination that matches your tubing ID and your port thread size.

Yes. The plastic construction is corrosion-resistant and suitable for continuous freshwater aquarium use. These fittings are commonly used on aquarium filters, powerheads, and air line connections. They are not recommended for saltwater or chemical fluid systems without confirming material compatibility.

These fittings are designed for low-pressure freshwater and air applications typical of aquariums, irrigation, and hobby plumbing. They are not rated for high-pressure industrial systems. If you need a specific pressure rating for your application, please contact us to confirm suitability before ordering.

For most low-pressure aquarium and irrigation applications, the barbed profile provides sufficient grip without a clamp. For higher-flow or vibration-prone setups, adding a small hose clamp over the barb is recommended to further secure the tubing and prevent pull-out.

Yes. These hose barb fittings are compatible with flexible PVC, silicone, and rubber tubing. Silicone tubing is slightly more elastic, so the barb will seat securely. Ensure the tubing ID matches the barb OD for the best seal.

Bulk packs offer a lower per-unit cost and are ideal for aquarium rack builds, irrigation manifold installations, or workshop stock. Having spares on hand also means you can replace a fitting quickly without waiting for a reorder. Select your preferred quantity in the Amount variant option above.