The AS568-356 DUPONT KALREZ 4079 O-Ring from Freudenberg-NOK is designed for high-performance sealing applications. This O-ring features a diameter of 3.530 inches and a cross-section of 0.139 inches, making it suitable for various industrial uses. Constructed from Kalrez, a high-performance fluoropolymer, it offers exceptional resistance to chemicals, heat, and aging. This O-ring meets stringent industry standards, ensuring reliability in demanding environments. Its compatibility with a wide range of systems makes it a versatile choice for engineers and maintenance professionals.