Importance

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Abstract

An annular sealing device having a core member and a seal lip member of elastic body fixed to the core member, adapted to be mounted between a metal outer member and an inner member with a flange portion in which the outer member and the inner member are concentrically provided and relatively rotate. The core member comprises a fitting cylindrical portion which is fitted to an inner circumferential portion of the outer member, an outward flange portion extending in centrifugal direction from one end of the fitting cylindrical portion, and including an abutment portion which directly contacts an end surface on the side of the flange portion of the outer member under fitted state, and an inward flange portion extending in centripetal direction from the other end of the fitting cylindrical portion. The seal lips member includes a lip base portion fixed to an area from an inner circumferential edge of the inward flange portion to an outer circumferential edge of the outward flange portion, and a plurality of annular lips to extend concentrically from the lip base portion. The annular lips include a plurality of axial lips which slidably contact the flange portion under elastically deformed state, an exterior lip formed at the radially outermost circumference so as to slidably contact or to be disposed close to the flange portion, and a gasket lip formed to project opposite to the flange portion on the radially outward side of the abutment portion and elastically contacting the end surface of the outer member along the axial direction under compressed state.

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First Claim