| 摘要 |
{Technical Problem} Provided is a shaft seal device whereby both sustained sealing function and low friction in the seal section can be realized. {Solution to Problem} In a lip-type seal shaft seal device equipped with a lip seal for sealing a rotary member and a stationary member concentrically disposed to the inside and outside in a radial direction, a plurality of aeration-creating parts for creating aeration through relative rotational sliding of the lip seal and the rotary member are formed in separated fashion in the circumferential direction on the outside peripheral surface of the rotary member. The aeration-creating parts are configured from a plurality of fine grooves arranged in the circumferential direction and extending along the axial direction of the rotary member. The lip of the lip seal extends towards the outside atmosphere side, leaving a portion of the aeration-creating parts at the sealed fluid side in the axial direction. |
