O-RING (Hyundai HNCO0021A)

HNCO0021A: A damaged retaining ring can allow assembled components to separate under load, leading to mechanical failure. During inspection, a retaining ring may show signs of deformation or cracking that compromise its holding force. This aftermarket replacement part references Hyundai as the OE maker and carries the cross-reference number HNCO0021A. The part type is a retaining ring, which functions as a mechanical fastener that seats into a groove to secure components on a shaft or in a bore. A common failure consequence is that a worn or broken retaining ring can cause unintended disassembly of rotating or stationary parts. Keeping a retaining ring in sound condition helps maintain the axial positioning of critical assemblies. Verify the serial number or application, then call (562) 693-7748.

Part number variants: HNCO0021A, hnco0021a