| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently reduce a friction torque generated when sliding a lip, in a sealing device with a seal lip that is slidably brought into close contact with a mating member and also with a parallel protrusion shape comprising a plurality of annular protrusions on a sliding surface of the seal lip.SOLUTION: In a parallel protrusion shape structure, a plurality of annular protrusions are arranged with a space such that a flat part can be arranged between adjacent annular protrusions. Also, one annular protrusion of the plurality of annular protrusions is arranged at the most distal end of the seal lip. |
