The McCormick 6689225A1 O-Ring is a genuine OEM sealing component designed for reliable performance in agricultural machinery. This O-ring features an internal diameter of 19.05 mm and a cross-section of 3.18 mm, ensuring a precise fit and effective seal. It is compatible with a wide range of McCormick tractors, including C, CX, F, GM, T, and V series models, as well as being cross-referenced with equivalent part numbers from Case IH, New Holland, Landini, and other major brands. Manufactured to original specifications, it provides essential sealing for various hydraulic or fluid systems, preventing leaks and maintaining system integrity.