The AS568-043 SIMRIZ Z7257 is a reliable sealing solution with a 3-1/2" inner diameter and a 3-5/8" outer diameter, featuring a thickness of 1/16". This product from Freudenberg-NOK is crafted from high-performance SIMRIZ material, known for its exceptional resistance to various chemicals and temperature extremes. It meets industry standards, ensuring compatibility with numerous applications, particularly in hydraulic and pneumatic systems. The Z7257 is designed to provide a dependable seal, enhancing the efficiency and longevity of your equipment.