| 摘要 |
A sealing device for sealing space between two members concentrically and relatively rotating comprising a core member fixedly fitted into one of the two members, a metal slinger fixedly fitted into the other of the two members, and an elastic seal member fixedly attached to the core member and having a seal lip which elastically and slidably contacts the slinger. The slinger has a slidably contacting treated surface for the seal lip as is processed such a surface-treatment as defined by the following parameters: arithmetic mean roughness Ra in the range from 0.5μm to 1.5μm, root-mean-square roughness Rq in the range from 0.6μm to 2.0μm, mean surface irregularity interval Sm in the range from 0.05 mm to 0.17 mm and peak count Pc (50%) in the range from 20 to 60.
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