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Piston seals or piston rings are used in hydraulic cylinders for fluid sealing and are designed to ensure that pressurised fluid does not leak across the cylinder head as the system pressure pushes the piston down the cylinder bore.

Piston seals or piston rings are used in hydraulic cylinders for fluid sealing and are designed to ensure that pressurised fluid does not leak across the piston as the system pressure pushes the piston down the cylinder bore.

Wipers are installed in the sealing configurations of hydraulic cylinders to prevent contaminants such as dirt, dust and moisture from entering the cylinder as they retract back into the system.