Sensor-holding lid for a wheel hub bearing, the lid presenting a base wall which is externally delimited by a peripheral border, an axial ledge which is integral to the wall and which is provided with a passing hold for housing the sensor, and a cylindrical wall which is transverse to the base wall and which is arranged radially inside the peripheral wall in order to be fixed onto an external border of the bearing; at least two annular static sealing elements which are made of rubber and which are co-molded, respectively, into the peripheral border on the outside of the cylindrical wall and inside an entry border of the passing hole.