Ferrule fittings (sometimes referred to as compression tube fittings) provide reliable, leak-tight connections in piping systems without welding. They are extensively used in instrumentation, hydraulic, chemical, and industrial systems.

These fittings seal pipes or tubes by compressing a ferrule (or ferrules) against the tube body and fitting interface. This creates both grip and sealing contact, ensuring system integrity even under vibration, pressure changes, or temperature fluctuations.

Key Features & Benefits

Typical features of quality ferrule fittings include:

• Available in single or double ferrule designs, depending on pressure and vibration requirements
• Materials such as stainless steel, brass, or alloy options for corrosion resistance
• Sizes often cover standard tubing ODs from small to larger ranges (e.g. 1/8″ to 2″ or 6 mm to 50 mm)
• Designs that separate sealing and gripping functions (double ferrule) to enhance performance
• Capable of withstanding high pressures, potentially up to hundreds of bar in proper configurations
• Ease of installation and re-tightening, without requiring hot works or welding

In a single ferrule fitting, one ferrule does both sealing and tube gripping. It’s simple, cost-efficient, and suitable for many moderate-pressure applications. In a double ferrule design, the front ferrule forms the seal and the back ferrule provides extra grip and stability—especially useful in high vibration or high-pressure systems.

Each fitting undergoes rigorous manufacturing checks—dimensional accuracy, material verification, hardness, and sealing integrity tests—to ensure reliable performance and prevent leaks.

Proper selection, installation, and periodic inspection of ferrule fittings ensure long service life, minimal maintenance, and safe operation across diverse piping systems.