Genuine OEM Audi Shaft Sealing Ring, part number 0CS301457A. This sealing ring is designed to prevent fluid leakage from rotating or reciprocating shafts within the transmission assembly, maintaining proper lubrication and preventing contamination. Weighing only 0.0029 kg, this genuine OEM seal ensures a precise fit and material integrity, which is critical for preventing costly fluid loss and protecting internal transmission components from premature wear.