WASHER - COPPER SEALING (Komatsu KO012425)

A damaged copper sealing washer can allow fluid to escape from a threaded connection, leading to gradual loss of system pressure. During assembly, the washer compresses to fill gaps between the fitting and the mating surface. The part is an aftermarket replacement referencing Komatsu catalog number KO012425. Its general function is to prevent leakage at a joint where two components are fastened together. A worn or reused washer may fail to seal, resulting in a slow drip that worsens over time. Keeping a copper sealing washer in sound condition helps maintain a reliable seal under normal fastening torque. Verify the serial number or application, then call (562) 693-7748.

Part number variants: KO012425, ko012425