The SIMRIZ SZ134 O-Ring, AS568-340, is engineered with a 3-3/8" inner diameter and 3-3/4" outer diameter, providing a reliable sealing solution for various industrial applications. Constructed from durable elastomer materials, this O-Ring offers excellent resistance to chemicals and high temperatures, ensuring longevity and performance. Its precise dimensions guarantee a secure fit, making it ideal for use in hydraulic and pneumatic systems. This O-Ring meets industry standards, ensuring quality and reliability in critical applications.