Sealing device

Abstract

To provide a sealing device that can suppress an increase in torque by suppressing adsorption of a seal lip to a hub flange.SOLUTION: A sealing device 10 seals an annular gap S and is attached to hub flange 32 side. A seal member 12 includes a first seal lip 121 which deforms and makes sliding contact with the hub flange. The first seal lip has a first curved part 1211, a second curved part 1212 and a straight part 1213 in an outer peripheral surface 121c. The first curved part is formed in a curved shape having a predetermined radius of curvature r1 from a base part 120. The second curved part is formed in a curved shape having a predetermined radius of curvature r2 at a position separated from the first curved part to the hub flange side. The radius of curvature of the first curved part is larger than the radius of curvature of the second curved part. The straight part is provided between the first curved part and the second curved part, and has a linear shape of 0.1 mm to 0.3 mm in a longitudinal sectional shape before deformation.SELECTED DRAWING: Figure 2

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