Piston Seals

Piston seals in hydraulic cylinders have the task of sealing the piston against the cylinder tube. The goal is to avoid the transfer of the pressurized operating medium to the pressureless side, allowing the efficient and reliable movement of the piston with the lowest possible friction and without drift.
State-of-the-art hydraulic piston seals can be precisely adjusted to a particular application with the selection of suitablematerials. Polyurethane and PTFE materials mainly come into use. In combination with the Freudenberg Sealing Technology geometries – which have been proven a million times over – they always provide the optimal solution.