What type of seal is commonly used in hydraulic cylinders?

O-rings are widely used in hydraulic cylinders due to their effective sealing capabilities, resilience, and simplicity. They are designed to fit into a groove and create a tight seal between two or more components, thus preventing the escape of hydraulic fluid and protecting against contamination. The circular shape of O-rings allows them to maintain consistent pressure and accommodate dynamic movement, which is essential in hydraulic applications where parts are frequently in motion.

O-rings made from various materials can also be selected based on the specific hydraulic fluid, temperature range, and environmental conditions, making them versatile and reliable components in hydraulic systems. Their ability to perform under high-pressure conditions further enhances their suitability for this application.

While other types of seals may have specific uses in different contexts (such as flat gaskets in mechanical joints or compression seals in static applications), O-rings stand out for their widespread employability in hydraulic cylinders, essential for maintaining optimal performance and efficiency within hydraulic systems.