Genuine OEM Kia Clutch Sealing Ring, part number 457523B400. This critical component is designed to prevent fluid leakage within the clutch system, ensuring that hydraulic pressure is maintained for proper clutch engagement and disengagement. It forms a tight seal between mating surfaces in the clutch assembly. While specific material is not detailed, it is engineered for durability and resistance to clutch fluids. Opting for a genuine OEM sealing ring guarantees precise dimensions and material composition, which are crucial for preventing leaks and ensuring the long-term reliability and smooth operation of the transmission and drivetrain.