Piston rod seal device for cylinder group

摘要

The seal device fits against a piston rod (2). It includes a double seal (8), a piston rod seal (10) and an O-ring (11) acting as a support ring for the piston rod seal. The double seal is in an annular groove (7) in the inner circumference of a piston rod guide (3). An annular dividing wall extends from the piston rod guide, so that a force applied from the O-ring to the piston rod seal is divided between this seal and the dividing wall.