This is a genuine OEM Fiat part number 581640, identified as a seal (joint). It features an outer diameter of 50 mm, an inner diameter of 35 mm, and a thickness of 8 mm. Weighing 0.01 kg, this seal is engineered to provide a precise fit and reliable sealing performance in compatible agricultural machinery. It is suitable for a wide range of Fiat, Fiat Someca, Fiatagri, and New Holland tractor models, including the 450, 480, 500, 540, 550, 600, 640, 650, 750, 850, 950, 1000, and 1300 series.