Maintaining the integrity of the stern shaft sealing device is a prerequisite for ensuring the proper operation of the system. Therefore, it is essential to ensure that the sealing device consistently provides effective sealing within the system’s operating pressure and the range of temperatures it may encounter.
The types of sealing devices depend on the working conditions. In hydraulic and pneumatic systems, sealing devices are generally classified into two forms: dynamic seals and static seals. A dynamic seal is used where relative motion exists between the two components being sealed, such as the seals between the cylinder body, end cap, piston, and piston rod in a hydraulic actuator.
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