90° Elbow Hose Barb Fitting with External Thread — Plastic Tube Connector M5 to M12

Match the barb outer diameter (OD) to your tubing's inner diameter (ID). For example, a 4mm barb generally fits tubing with a 4mm ID. A slightly undersized barb creates a tighter, more secure grip. If you're between sizes, typically go with the smaller barb for a snug fit. For example: 6mm barb ≈ 1/4" ID tubing; 8mm barb ≈ 5/16" ID tubing.

These fittings use metric external threads (M5, M6, M8, M10, M12). They are generally compatible with standard metric-threaded ports and fittings. If your system uses NPT or BSP threads, these fittings are not directly compatible — please confirm your thread standard before ordering.

Plastic hose barb fittings are typically rated for low-to-medium pressure applications. They are generally suitable for gravity-fed or low-pressure fluid systems such as aquariums, drip irrigation, and hobby cooling loops. For high-pressure applications, we recommend confirming suitability with your system specs or contacting us directly.

Plastic fittings are generally resistant to moisture and do not rust or corrode, making them commonly used in outdoor irrigation, aquarium systems, and other wet environments. However, prolonged UV exposure may affect some plastics over time. If long-term outdoor installation is planned, consider shielding the fittings from direct sunlight or contact us to confirm material suitability.

These plastic tube connectors are generally compatible with water, air, and many non-aggressive fluids. They are not recommended for use with strong solvents, fuels, or highly corrosive chemicals. If in doubt, contact us to confirm compatibility with your specific fluid before use.

For low-pressure applications, the barb design typically provides a secure friction fit without additional clamps. For higher-pressure or vibration-prone setups, using a hose clamp over the barb is recommended. Applying PTFE thread seal tape to the external thread is generally advised to ensure a leak-free threaded connection.

The 90° elbow design allows tubing to change direction at a right angle without kinking the tube. This is useful in tight spaces, around corners, or when routing tubing along surfaces in aquariums, irrigation systems, cooling loops, and DIY fluid projects where a straight fitting would cause the tube to bend sharply and restrict flow.

The thread size refers to the outer diameter of the threaded portion of the fitting. Match it to the thread size of the port or fitting it will screw into. If you are unsure, measure the thread diameter of your port with calipers: M5 ≈ 5mm, M6 ≈ 6mm, M8 ≈ 8mm, M10 ≈ 10mm, M12 ≈ 12mm. When in doubt, contact us to confirm before ordering.