The AS568-236 SIMRIZ SZ501 O-ring is engineered with a 3-1/4" inner diameter and a 3-1/2" outer diameter, featuring a thickness of 1/8". This high-performance sealing solution from Freudenberg-NOK is designed for durability and reliability in various applications. Made from premium materials, the SIMRIZ SZ501 offers excellent resistance to chemicals and high temperatures, making it suitable for demanding environments. It meets industry standards, ensuring compatibility with a wide range of systems, and is ideal for use in hydraulic and pneumatic applications to prevent leaks.