A lid 1 that is adapted to cover a food processor bowl 2 has a flexible sealing ring assembly 3 that is mounted to a lower surface of the lid 1, along the perimeter. The sealing assembly 3 includes resilient springs 4 that compress and relax in order to provide a downwardly biased force between the sealing assembly 3 and the upper rim 5 of a bowl 2 to which the lid 1 is mounted.