The McCormick 3388556M1 Seal Ring is a genuine OEM component designed for critical sealing applications in various agricultural machinery. This high-quality ring features an inner diameter of 40mm, an outer diameter of 50mm, and a thickness of 5mm, providing a precise fit and preventing leaks. It is compatible with a wide range of McCormick, Massey Ferguson, and Landini tractors and equipment, ensuring optimal performance and durability in demanding conditions.