Low-friction sealing assembly for a wheel-hub unit and wheel-hub unit equipped with such a sealing assembly

A low-friction sealing assembly for a vehicle wheel-hub unit that is configured to be inserted inside an annular interspace defined between a flanged rotating element and a stationary element of the wheel-hub unit to protect at least one ring of revolving members arranged between the stationary element and the rotating element, the low-friction sealing assembly comprises:

• a first annular screen integral with the rotating element;
• a second annular screen integral with the stationary element;
• and
• an annular seal comprising lips that extend axially and radially projecting from the second screen towards the first screen inside an annular chamber defined by the first and second screens;
• the sealing assembly providing a multi-stage sealing assembly and comprises:
• a first inner collecting stage designed to collect and expel some of the contaminants and is defined by an annular cavity of the first screen;
• a labyrinth stage that is arranged radially on the outside of the first inner collecting stage along an entry/exit path of the contaminants and is also defined by an annular deviating lug of the first screen;
• and
• an outer collecting stage that is positioned axially on the outside of the stationary element and is positioned radially outside the labyrinth stage along the entry/exit path of the contaminants, the annular lip seal having an annular deflector screen integrated in the seal and extends radially and axially on the outside of the stationary element and defines part of the outer collecting stage.