The AS568-335 SIMRIZ SZ481 is a reliable O-ring with a 2-3/4" inner diameter and a 3-1/8" outer diameter, featuring a thickness of 3/16". Manufactured by Freudenberg-NOK, this O-ring is engineered for high performance in various sealing applications. It is constructed from high-quality materials that provide excellent resistance to chemicals and high temperatures, making it ideal for use in harsh environments. The SIMRIZ SZ481 meets industry standards, ensuring compatibility with a wide range of systems. This O-ring is perfect for hydraulic and pneumatic applications, providing a secure seal to prevent leaks.