Patent ID: 6942224

Claim:
In a device having a chamber defined by a lid and a cavity, a seal member for sealing the chamber comprising: a base portion adapted to be received within a first slot formed in the lid, said base portion having an L-shaped corner at a first end of the base portion and a radiused corner at a second end of the base portion, said L-shaped corner being dimensioned to facilitate removal of said base portion from said first slot, and said radiused corner being dimensioned to facilitate installation of said base portion within said first slot; a seal portion having a substantially concave outer surface defining a plurality of sealing edges engageable with a sealing surface surrounding the cavity; first and second flexible side walls, each of said first and second flexible side walls connected between the base portion and the seal portion; and an inflatable inner cavity defined by the base portion, the seal portion, and the first and second flexible side walls, wherein said first and second flexible side walls flex in response to inflation of the inner cavity to force the plurality of sealing edges into engagement with the sealing surface, said concave outer surface maintaining a concave shape when the inner cavity is inflated.