Patent ID: 9683662
Date: 2017-06-20
CPC Classifications: F16C,F16J

Claim:
1. A sealing device comprising: an elastic body formed of a material that is configured to swell upon exposure to water, the elastic body including a sliding lip which seals so as to prevent the water in a machine outside from entering into a machine inside; and a first labyrinth lip which makes the water hard to reach the sliding lip, wherein a first notch portion for absorbing swelling of the first labyrinth lip when the first labyrinth lip is exposed to the water and is swollen is provided in a first leading end portion of the first labyrinth lip, a second labyrinth lip is provided at a machine inside side of the first labyrinth lip, a second notch portion is provided in a second leading end portion of the second labyrinth lip, and the first notch portion provided in the first leading end portion of the first labyrinth lip and the second notch portion provided in the second labyrinth lip are arranged so as to be offset from each other.