The Hitachi 263J847081 is an authentic OEM dust ring, precisely engineered with a 47mm inner diameter, 58mm outer diameter, and 5mm thickness. This critical component is designed to protect hydraulic and mechanical systems in Hitachi EX100-3, EX100-5, EX120-3, EX120-5, ZAXIS110, ZAXIS120, ZAXIS130, ZAXIS135US, ZAXIS160, ZAXIS180 excavators, and ZW100, ZW120 wheel loaders. It effectively prevents the ingress of dust, dirt, and other contaminants, ensuring the longevity and optimal performance of seals and moving parts in demanding operating environments.