The AS568-431 DUPONT KALREZ 1050LF O-Ring from Freudenberg-NOK is designed for high-performance sealing applications. This O-Ring features a diameter of 4.331 inches and is made from 90 durometer FKM material, ensuring excellent resistance to heat, chemicals, and pressure. With a cross-section of 0.139 inches, it meets stringent industry standards for reliability and durability. Ideal for use in various industrial applications, this O-Ring is compatible with a range of systems and provides a secure seal under demanding conditions.