| 摘要 |
Provided is a sealing device which comprises a sliding lip and a labyrinth lip, the sealing device being configured in such a manner that, even if the labyrinth lip is exposed to foreign matter outside a machine and swells, the deformation of the labyrinth lip is prevented and therefore the sliding lip-protecting function of the labyrinth lip is less likely to be lost. A sealing device is provided with: a sliding lip which performs sealing so that foreign matter outside a machine does not enter the inside of the machine; and a labyrinth lip which makes it less likely that foreign matter outside the machine reaches the sliding lip. The sealing device is characterized in that the front end of the labyrinth lip is provided with a cutout which absorbs the swelling of the labyrinth lip occurring when the labyrinth lip is exposed to foreign matter. Alternatively, the sealing device is characterized in that a second labyrinth lip is provided on the side of the labyrinth lip with which faces the inside of the machine. Alternatively, the sealing device is characterized in that a similar cutout is provided also in the front end of the second labyrinth lip. |
