This is a genuine AGCO V836640276 O-Ring seal, an authentic OEM component designed for a wide range of Massey Ferguson, Valtra, Fendt, and Challenger agricultural and construction equipment. Measuring 40 mm in inner diameter, 50 mm in outer diameter, and 5 mm in thickness, this O-ring ensures a reliable and tight seal, crucial for preventing leaks and maintaining system integrity in various applications. It is an essential replacement part for hydraulic systems and other sealing points in compatible machinery.