The Freudenberg-NOK AS568-352 SIMRIZ SZ485 O-ring is designed for high-performance sealing with a 4-7/8" inner diameter, 5-1/4" outer diameter, and a 3/16" cross-section. Made from advanced SIMRIZ material, it provides exceptional resistance to a variety of chemicals and high temperatures, making it perfect for industrial applications. This O-ring meets AS568 specifications, ensuring a precise fit and reliable sealing performance. Its robust construction makes it suitable for use in harsh environments, providing peace of mind for engineers and maintenance professionals.