| 摘要 |
Included are an exterior sealing member (20) that is annularly molded using an elastomer; a reinforcing ring (10) that is disposed in a housing hole (B) so as to surround an outer circumference of a rotating shaft (C) and to press a fitting portion (21) of the exterior sealing member (20) against an inner circumference surface of the housing hole (B); a retainer (40) that is mounted in the reinforcing ring (10); an auxiliary sealing member (30) having one end portion that is pinched and retained between the retainer (40) and the reinforcing ring (10) and the other end portion that is pressed against the outer circumference surface of the rotating shaft (C); and an elastic tongue piece (42) and an engagement portion (13) that is provided between the retainer (40) and the reinforcing ring (10). The elastic tongue piece (42) and the engagement portion (13) deform elastically to permit the retainer (40) to be accommodated in the reinforcing ring (10) when the retainer (40) is mounted in the reinforcing ring (10), and the elastic tongue piece (42) and the engagement portion (13) are elastically restored to prevent the retainer (40) from dropping out of the reinforcing ring (10) when the auxiliary sealing member (30) is pinched and retained between the retainer (40) and the reinforcing ring (10). |
