The AS568-905 5/16" ID x 0.072 CS SIMRIZ SZ501 O-ring by Freudenberg-NOK is engineered for optimal sealing performance in various applications. With a 5/16" inner diameter and a cross-section of 0.072", this O-ring is crafted from high-quality SIMRIZ material, known for its superior resistance to oils, chemicals, and extreme temperatures. The SZ501 model meets stringent industry standards, ensuring compatibility with numerous systems. This O-ring is ideal for use in both hydraulic and pneumatic systems, providing a reliable seal that enhances operational efficiency and reduces the risk of leaks.