The D-300 3.125 x 3.500 x 0.375 Rod Seal by Freudenberg-NOK is designed for high-performance sealing in hydraulic applications. With an inner diameter of 3.125 inches, outer diameter of 3.500 inches, and a thickness of 0.375 inches, this rod seal is engineered to provide optimal sealing and support. Made from advanced materials, it offers excellent resistance to wear and high pressures, ensuring a long service life. The D-300 series is known for its reliability and efficiency, making it a preferred choice for various industrial applications, compliant with industry standards.