There is provided a rotary seal having uneven surfaces formed on sliding contact surfaces of a slinger with which seal lip portions of a seal member come in contact, in which wear of the seal lip portions is reduced, resulting in increased reliability. The rotary seal 1 includes: a core metal 3; the seal member 4 having a base portion 4A joined to the core metal 3 and the seal lip portions 4B, 4C, and 4D; and the slinger 2 having the sliding contact surfaces A and B with which the seal lip portions 4B, 4C, and 4D come in contact, in which each of the sliding contact surfaces A and B is in such a surface condition that an arithmetic average roughness Ra satisfies 0.3 μm≤Ra≤1.0 μm, a skewness of roughness curve Rsk satisfies Rsk≤−1, and an average length of roughness curve element RSm satisfies 100 μm≤RSm, Ra, Rsk, and RSm defined by JIS B 0601:2013.


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    Title :

    Rotary seal


    Contributors:

    Publication date :

    2020-03-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F16C SHAFTS , Wellen / B60B VEHICLE WHEELS , Räder für Fahrzeuge / F16J Kolben , PISTONS



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