Patent ID: 8857645

Claim:
A container, comprising: walls defining an interior space and an upper portion, the upper portion defining a sealing flange having an internal edge which defines an opening to the interior space; a collar having an interior surface adapted to fit around the upper portion; a lid attached to the collar and having an interior surface, the lid movable between an open position and a closed position, and adapted to cover the opening while in the closed position, the lid having a sealing wall protruding from the interior surface; and a flexible gasket positioned to extend from the interior surface of the collar to removably rest against the sealing flange, wherein the flexible gasket projects inwardly to extend beyond the internal edge of the sealing flange; wherein the sealing wall and the sealing flange are dimensioned such that the sealing wall biases the flexible gasket against the internal edge of the sealing flange with the lid in the closed position.