{"id":2857,"date":"2024-03-07T11:38:04","date_gmt":"2024-03-07T10:38:04","guid":{"rendered":"https:\/\/www.bf-hydraulik.com\/encyclopedia\/hydraulic-cylinder-seals\/"},"modified":"2026-04-15T11:53:24","modified_gmt":"2026-04-15T09:53:24","slug":"hydraulic-cylinder-seals","status":"publish","type":"encyclopedia","link":"https:\/\/www.bf-hydraulik.com\/en\/hydraulic-cylinder-seals\/","title":{"rendered":"Hydraulic cylinder seals"},"content":{"rendered":"\t\t
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Hydraulic cylinder seals<\/h1>

Hydraulic systems<\/a> only perform as well as their ability to maintain pressure. This is particularly evident at the interfaces between the oil side and the outside. This interface is usually formed by the extending piston rods of linear actuators. To prevent hydraulic fluid from leaking during this movement, appropriate seals are used. Although these seals are very small, they bear the greatest load in the entire system. For this reason, hydraulic cylinder seals<\/a> for large applications are designed in multiple stages. <\/p>

Types of hydraulic cylinder seals<\/h2>

The larger a hydraulic cylinder becomes and the higher the system pressure, the more complex the sealing of the component becomes. While a single seal is sufficient for small applications, such as brake pistons in vehicles, heavy-duty cylinders use up to seven different sealing elements. These are: <\/p>