Sealing ring for machine shafts - has torque restriction both axially and radially and predetermined pressure distribution

摘要

The sealing ring (10) which fits into a groove (11) in the first machine part (12) opening towards the second machine part (14) rests with a dynamic sealing edge (20) on a contact face (25) of the second machine part and is pressed with a static sealing edge (21) against a first groove flank (26). The ring (10) sealingly adjoins a second groove flank (28) over a radially aligned section (27) with a length of r is greater than or equal to 20 percent of the axial length of the ring, and adjoins the base (30) of the groove over an axially aligned section (29) of a length of x is greater than or equal to 20 percent of the axial length of the ring. ADVANTAGE - The static sealing edge acts as a secondary seal whilst the dynamic sealing edge seals the relatively movable machine parts.