The Sealing Principle of O-Rings: How They Work in Static, Reciprocating, and Rotary Applications
O-rings, also known as O-ring seals, are rubber rings with a circular cross-section. They are one of the most widely used sealing solutions in hydraulic, pneumatic, and mechanical systems. Thanks to their excellent sealing performance, simple design, and versatility, O-rings can be used for both static and dynamic applications. When the right material is selected, they can handle pressures from vacuum (1.333 × 10⁻⁵ Pa) up to 400 MPa and temperatures ranging from -60°C to 200°C.
