The "ring fitting" or "ring fitting" is a type of connection used in hydraulic and pneumatic systems that complies with DIN 2353 or ISO 8434. This standard defines the technical specifications for compression fittings with a shear ring for stainless steel, carbon steel, and other materials of tubing. They are part of the most widespread hydraulic connection systems in the world. This type of tube connection has become particularly popular in Europe, Asia, and South America due to its numerous advantages. It allows connection to all types of equipment, valves, cylinders, and peripherals.
The DIN 2353 ring fitting , also known as the EO (Ermeto Original) fitting, is used to securely and reliably connect rigid tubing in hydraulic and pneumatic systems. This type of fitting uses a shear ring, also called a compression ring, which is positioned on the outer surface of the tubing at a 24-degree cone and is compressed against the fitting seat when the nut is tightened. This creates a leak-proof seal and provides a connection resistant to vibration and high pressures. The joint is leak-proof and resistant to loads from bending, forward pressure, and tubing breakage.
These types of connections can be assembled and disassembled as many times as required. This type of connection has been verified and certified by numerous certification societies worldwide.
There are three types of DIN 2353 fittings, depending on the pressures they will operate at. The LL series is for low pressure up to 50 bar, the L series is for light pressure up to 250 bar, and the S series is for heavy pressure up to 800 bar.
The DIN 2353 ring fitting is widely used in industrial, automotive, and aerospace applications where a secure and reliable connection is required for high-pressure fluid transport. This type of fitting is known for its compact design, corrosion resistance, and ease of assembly and disassembly.
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