The Eicher 1621811M1 is a genuine OEM shaft seal, also known as an oil seal, designed for various Massey Ferguson agricultural tractors and industrial machinery. This high-quality seal features precise dimensions of 50mm inner diameter, 70mm outer diameter, and 10mm thickness, ensuring a reliable fit and optimal sealing performance. It is commonly used as a crankshaft oil seal, preventing leaks and maintaining engine integrity across a wide range of Massey Ferguson models including the 100, 200, 300, 500, 600, 1000, 2000, 3000, 4200, 4300, 5400, 6100, 6200, 6400, 7400, 8100, and 8200 series, as well as several industrial models.