O-RING (Komatsu KO30B-63-11280)

A damaged retaining ring can allow assembled components to separate under load. This aftermarket replacement part references the Komatsu catalog and cross-references part number KO30B-63-11280. The retaining ring functions as a mechanical fastener that seats in a groove to hold parts in place. If the ring fails, the secured component may shift or dislodge, leading to operational noise or misalignment. During routine service, a retaining ring may be removed and replaced to ensure continued retention. The item ships at approximately 0.002 pounds. Verify the serial number or application, then call (562) 693-7748.

Part number variants: KO30B-63-11280, ko30b-63-11280, KO30B6311280, ko30b6311280