The Kobelco XKBQ00219 is a genuine OEM O-ring designed to provide a secure and leak-free seal in critical hydraulic applications. With an inner diameter of 21.8 mm, an outer diameter of 27.2 mm, and a thickness of 2.7 mm, this O-ring is manufactured to precise specifications for optimal performance and durability. It is a vital component for maintaining the integrity of hydraulic systems across a wide range of Kobelco excavators and machinery.