The Freudenberg-NOK 0.3125 x 0.6875 x 0.1875 NBR Loaded Symmetrical U-Cup is engineered for optimal sealing performance in hydraulic and pneumatic applications. Constructed from durable NBR (Nitrile Butadiene Rubber), it provides excellent resistance to various oils and fuels. This U-Cup measures 0.3125 inches in width, 0.6875 inches in outer diameter, and 0.1875 inches in height, making it compatible with a range of standard fittings. Its robust design ensures compliance with industry standards, delivering reliable performance in challenging conditions.