The AS568-128 DUPONT KALREZ 4079 O-Ring is a high-performance sealing solution designed for demanding applications. This O-ring features a standard size of 3.5 inches ID and 0.139 inches CS, crafted from Kalrez material known for its exceptional chemical resistance and thermal stability. It is ideal for use in environments where traditional elastomers fail, ensuring reliable sealing in various industrial applications. This O-ring meets industry standards, making it compatible with a wide range of systems. Its durability and resilience make it a preferred choice for engineers and maintenance professionals.