The JCB 10300127 U Ring is a genuine OEM sealing component designed for JCB machinery. This U-shaped seal, also referred to as a Joint U, ensures a tight and reliable seal in hydraulic systems, preventing leaks and maintaining optimal performance. With an inner diameter of 105 mm, an outer diameter of 125 mm, and a height of 12 mm, this precision-engineered seal is crucial for the integrity of hydraulic cylinders and other critical components. It is compatible with a wide range of JCB 3CX and 4CX backhoe loaders, 500 series Loadall telehandlers, and JS series excavators.