| 摘要 |
Provided is a lip type seal wherein a resin-made second lip seal member, which is a component of the lip type seal, can be effectively prevented from detaching radially inward from between a case and a backup ring by being dragged by a shaft when this shaft is being inserted. To achieve this, the lip type seal comprises a cartridge to be fit into the inner circumference of a shaft hole, a first lip seal member, a case, the resin-made second lip seal member, the backup ring, and an adapter. A protrusion section is provided in a partial portion of the circumference of a first flange section of the case. This protrusion section engages with the second lip seal member, thereby preventing the second lip seal member from turning with respect to the case and from detaching radially inward. Also, at the same time, a projecting section is provided in a partial portion of the circumference of the flange section of the backup ring. This projecting section engages with the second lip seal member, thereby preventing the second lip seal member from turning with respect to the backup ring and from detaching radially inward. |
