| 主权项 |
1. A seal member which is formed of a metal insert and an elastic body covering the metal insert and seals a gap between a tubular member and a shaft member axially movably inserted into the tubular member, the seal member comprising:
an annular fitting part which fits on an inner circumference of the tubular member; an annular dust lip which extends from the fitting part toward a side opposite from the tubular member, a diameter of an inner circumference of the dust lip gradually decreasing, with a distal end portion of the dust lip sliding on an outer circumferential surface of the shaft member; and an annular stopper part which projects from an end portion of the fitting part on a side opposite from the tubular member toward an outer circumferential side, wherein the metal insert includes a reinforcing ring, a reinforcing extension piece, and a reinforcing flange piece having a shape of an annular plate, the reinforcing ring standing along the inner circumference of the tubular member, the reinforcing extension piece extending from the reinforcing ring toward a side opposite from the tubular member and inclining such that a distal end of the reinforcing extension piece approaches the shaft member, and the reinforcing flange piece projecting from an end portion of the reinforcing ring on a side opposite from the tubular member toward an outer circumferential side, and the reinforcing ring is arranged in the fitting part, the reinforcing extension piece is arranged in the dust lip, and the reinforcing flange piece is arranged in the stopper part. |
