XCMG Spare Parts O RING 103X5.3 803301286

This is the factory-specified O-ring, directly from XCMG’s spare parts system. No substitutions, no guessing—just the right seal for the job. Part number 803301286 is what you’ll find in the original parts catalog.

Measures 103 mm inside diameter with a 5.3 mm cross section. Standard round profile, molded to tight tolerances. Fits precisely into the designated groove; no stretching or forcing needed during installation.

Made from high-grade nitrile rubber (NBR), rated for hydraulic oil, fuel, and moderate heat. Holds up under sustained pressure and vibration—common in boom cylinders, valve banks, and final drives on XCMG equipment.

Used across several XCMG models, including excavators, loaders, and cranes. Typically replaces seals in hydraulic lines or port connections where a reliable static or dynamic seal is required. Always verify fitment against your machine’s serial number.

Lightly lubricate before fitting. Inspect the groove for burrs or old seal residue. A clean installation prevents twisting and ensures full service life. Keep a few on hand for routine hydraulic service.