The 1.25 x 1.625 x 0.3125 Loaded Symmetrical U-Cup by Freudenberg-NOK, model N3101, is engineered for high-performance sealing in hydraulic systems. Constructed from NBR with a hardness rating of 93 AU, this U-Cup provides exceptional durability and resistance to various fluids. Its precise dimensions ensure a snug fit, enhancing sealing efficiency and preventing leaks. This product is perfect for industrial applications where reliability and longevity are critical, making it a preferred choice for engineers and maintenance professionals.