A SEALING DEVICE FOR BEARINGS HAVING CHANNELS FOR SUPPLYING PRESSURIZED AIR TO THE TIRE OF A VEHICLE WHEEL

摘要

A sealing device for a bearing of the hub of a motor vehicle wheel (20) is to be mounted between the rotatable race and the stationary race in order to delimit laterally and hermetically seal an annular space or chamber (14) defined between the bearing races (1,2) and communicating with channels (6,7) for the passage of pressurized air. The sealing device (20) comprises two sealing units (9) axially facing one another. Each sealing unit (9) comprises an annular reinforcement (10) having an axial cylindrical wall (10a) for mounting to a first bearing race (1) and a radial wall (10b) for reinforcing a flexible gasket (11).