XCMG Spare Parts O RING 92.5X3.55 803377342

This O-ring is the 92.5 x 3.55 seal used across XCMG heavy machinery—excavators, loaders, and cranes. It’s not a universal ring; it’s cut to the exact factory spec for hydraulic cylinders and engine systems where precision sealing is critical.

Made from high-grade nitrile rubber, it handles high pressure and resists oil, fuel, and temperature swings common in job site conditions. The material holds its elasticity over time, so it seals right the first time and keeps working through heat cycles.

The 92.5 mm inner diameter with a 3.55 mm cross-section fits specific grooves in XCMG hydraulic components. Using a generic ring here often leads to leaks or extrusion under pressure—this one matches the original groove design exactly.

Each piece is molded without flash and batch-tested for hardness and tensile strength. You’ll notice the consistent finish and slight matte texture—telltale signs it’s genuine stock, not a knockoff.

If you’re rebuilding a cylinder or replacing a leaky line, this is the direct factory replacement. Keep the part number visible during assembly; cross-checking ensures you’re installing the right seal for the application.