The Case-IH 505040 O-ring is a genuine OEM sealing component designed for a wide range of Case-IH and Case equipment, including tractors, combines, cotton pickers, and construction machinery. With an inner diameter of 15.54 mm, an outer diameter of 20.62 mm, and a cross-section of 2.62 mm, this O-ring provides a critical seal to prevent leaks and maintain system integrity. Manufactured to original specifications, it ensures optimal performance and durability in demanding applications.