SEAL (Komatsu KO6731-21-1260)

A worn seal can allow fluid leakage, leading to reduced system pressure and eventual component failure. This aftermarket replacement part references the Komatsu catalog number KO6731-21-1260. The seal functions as a static or dynamic barrier between mating surfaces, preventing the escape of lubricants or other media. A common failure consequence is contamination ingress, which accelerates wear on adjacent moving parts. In a typical usage context, seals are exposed to temperature cycling and pressure variations that degrade the elastomer over time. Verify the serial number or application, then call (562) 693-7748. The part is an aftermarket replacement, not a genuine Komatsu component.

Part number variants: KO6731-21-1260, ko6731-21-1260, KO6731211260, ko6731211260