Patent ID: 8646782

Claim:
A sealing arrangement, comprising: a shaft that is to be sealed and that is surrounded by a radial shaft seal ring, wherein the radial shaft seal ring comprises a first sealing lip and a second sealing lip, each of said first and second sealing lips being arranged axially adjacent to and at a distance from each other and together with a surface of the shaft to be sealed, configured to delimit a lubricant reservoir there-between, whereby the first sealing lip is curved axially in the direction of a first space to be sealed, for purposes of sealing off a first medium filled therein, and whereby the second sealing lip is curved axially in the direction of a second space to be sealed, for purposes of sealing off a second medium filled therein, whereby each first and second sealing lips have at least one sealing rib, each sealing rib being delimited by intersecting first and second conical surfaces, said first conical surface facing the first space to be sealed enclosing a larger angle relative to the surface of the shaft than the second conical surface facing the second space to be sealed, and wherein each sealing rib is configured to face in the same direction thereby producing a conveying direction axially towards the first space to be sealed, wherein a diameter of each of the at least one sealing rib is larger for each sealing rib towards the second space to be sealed, and wherein, on each sealing lip, only the sealing rib having the smallest diameter contacts the surface of the shaft to be sealed when said sealing arrangement is in an initially installed state, and wherein, on each sealing lip, each of said at least one sealing ribs comes into contact with the surface of the shaft to be sealed one after the other over a period of time in order of increasing diameter.