The Case-IH 256633A1 O-Ring is a genuine OEM replacement part designed for a wide range of Case-IH agricultural and construction equipment. This essential sealing component ensures a tight, leak-free connection in hydraulic and fluid systems, maintaining optimal performance and preventing fluid loss. With an inside diameter of 38.1 mm, an outside diameter of 44.45 mm, and a thickness of 3.175 mm, this O-ring is engineered to exact specifications for reliable operation in demanding environments across numerous tractor, combine, baler, and loader models.