Abstract: An annular seal for a shaft comprising an annular elastomeric lip 2 having an annular rim 2.1, and an annular reinforcing member 1 provided with a groove into which rim 2.1 fits. The portion of the member 1 spaced from the groove is compressible and in unassembled state is larger than in assembled state, the compression serving to lock the seal together. Multiple lips and/or grooves may be provided.

Abstract: A sealing ring comprises a reinforcing ring composed of thermoplastic material and has at least one annular groove therein and a lip ring concentrically nested in the reinforcing ring and having a circular bead for each annular groove. The circular bead has the same profile as the annular groove and is set therein. Each bead has a profile which in the projecting portion is enlarged in the manner of a wedge extending essentially radially outwardly and a nominal diameter on which each bead is disposed is smaller than the nominal diameter of the associated groove.