The McCormick 6630441A1 is a genuine OEM O-RING designed for various McCormick agricultural machinery, including the X4, X5, X6, X7, and X8 series tractors. This essential sealing component has an internal diameter of 12.00 mm and a thickness of 2.50 mm, weighing approximately 0.001 kg. It ensures a tight, leak-free seal in critical applications, maintaining optimal system performance and preventing fluid loss. Trust genuine McCormick parts for durability and precise fit.