The AS568-261 SIMRIZ SZ501 is engineered for optimal sealing performance with a 6-3/4" inner diameter and a 7" outer diameter, featuring a thickness of 1/8". This product from Freudenberg-NOK is crafted from high-quality SIMRIZ material, known for its exceptional resistance to various chemicals and thermal stability. It is designed to meet stringent industry standards, ensuring compatibility with numerous applications, particularly in hydraulic and pneumatic systems. The SZ501 seal guarantees a reliable and effective barrier, enhancing the longevity and efficiency of your equipment.