Seal device

A seal arrangement for a shaft connecting a driving unit to a hydraulic unit, the arrangement comprising in combination:

• a first seal device having a first rotating seal ring (6) and a first stationary seal ring (7), with said first stationary seal ring being retained in a holder (10) in said driving unit,
• said first seal device having a first elastic holding ring (11) for rotatably mounting said first rotating seal ring (6) on said shaft, and
• said first holding ring (11) having a first slotted socket member (13) forming fingers extending along said shaft beyond said first stationary seal ring (7) and forming at its extended end a first collar (15);
• a second seal device axially displaced from said first seal device, said second seal device having a second rotating seal ring (8) and a second stationary seal ring (9), with said second stationary seal ring being retained in said holder (10) in aid driving unit,
• said second rotating seal device having a second elastic holding ring (12) for rotatably mounting said second seal ring (8) on said shaft, and
• said second holding ring (12) having a second slotted socket member (14) forming fingers extending along said shaft in an interlaced manner with said first socket member (13) toward said first seal device and forming at its extended end a second collar (16);
• and
• a compression spring (17) arranged around said shaft and between said first collar (15) and second collar (16), whereby said first rotating seal ring (6), is pressed against said first stationary seal ring (7) and said second rotating seal ring (8) is pressed against said second stationary seal ring (9).