The 1.25 x 1.625 x 0.313 Loaded Symmetrical U-Cup from Freudenberg-NOK, model N3101, is designed for optimal sealing performance in various applications. Made from durable NBR material, this U-Cup features a 93 AU hardness rating, ensuring excellent resistance to wear and tear. With dimensions of 1.25 inches in inner diameter, 1.625 inches in outer diameter, and a 0.313-inch width, it fits seamlessly into standard hydraulic systems. This product is ideal for use in environments requiring reliable sealing under pressure, making it suitable for industrial machinery and automotive applications.