The Claas 0006278490 is a genuine NBR (Nitrile Butadiene Rubber) sealing ring, precisely engineered with an inner diameter of 40 mm and a thickness of 4 mm. This durable O-ring, with a hardness of 70 ShA, ensures a reliable seal in hydraulic and pneumatic systems across a wide range of Claas agricultural and harvesting machinery. It is designed to withstand demanding operational conditions, preventing leaks and maintaining system integrity in models such as LEXION, JAGUAR, AXION, and ARION series.