JOINT DYNAMIQUE POUR ASSURER L'ETANCHEITE A LA GRAISSE ENTRE UNE PIECE FIXE ET UNE PIECE TOURNANTE

摘要

The dynamic seal for a hub, in particular for the hub of a wheel of a rail vehicle containing grease comprises a fixed bush 21 and a rotating bush 23, the said bushes interacting in order to delimit, between them, a set of annular channels 25a of different diameter separated by at least one linking chamber 25b.