Sealing device

The utility model relates to a sealing device, which is used for sealing between a shaft part and an outer peripheral component which is annularly formed on the outer peripheral side of the shaft partby taking an axis (x) as a center, and comprises a reinforcing ring (10) which is arranged on the inner peripheral side (d) of the outer peripheral component and is formed in a disc shape by taking the axis as the center; and an elastic body part (20) which is attached to the reinforcing ring and is formed of an annular elastic body centered on the axis. The elastic body part is provided with: alip part (21) which covers the inner peripheral end part (11) of the reinforcing ring from the inner peripheral side, has an annular shape centered on the axis, and slidably contacts the shaft part; and an outer peripheral part (22) which covers the outer peripheral end part (12) of the reinforcing ring from the outer peripheral side (c), is annular with the axis as the center, and can be in contact with the outer peripher