the bearing seal assembly includes a metal shield and a resilient multi - lip sealing gasket secured to the metal shield . the metal shield is supported in use by an outer ring of a rolling contact bearing and includes a diagonally extending central portion . the sealing gasket provides a number of contacting lips facing an inner ring of the rolling contact bearing . a first , main contacting lip exerts a first radial load on the inner ring . a second contacting lip extends from the first lip and exerts a second radial load on the inner ring lower than the first radial load . a third contacting lip is on the opposite side of the second lip with respect to the first lip and exerts a third radial load on the inner ring lower than the first radial load but greater than the second radial load .