Wafer container with door interface seal

A sealable container for holding a plurality of wafers, the container comprising:

• a container portion having a top, a bottom, a left side, and a right side defining an interior space for receiving the wafers, the container portion having opposing shelves in the interior adjacent the left and right sides, the container portion having a kinematic coupling positioned at the bottom of the container portion, the container portion having an open side defined by a door frame, the door frame adjoining the top, the bottom, the left side and the right side and presenting a frame periphery with a corner sealing portion, the corner sealing portion comprising a forward facing planar surface and an inwardly facing surface extending rearwardly from the forward facing planar surface and defining a corner;
• a door receivable in the door frame to sealingly close the open side of the container portion, the door having an interior side and presenting a door periphery with a groove extending inwardly into the door adjacent the door periphery, the groove facing the interior of the container portion when the door is fitted in the door frame, wherein the groove is configured as a channel and is defined by a bottom seating surface, two opposing side surfaces, and an upper ledge portion with the upper ledge portion adjoining one of the two opposing sides at a corner;
• and
• an elastomeric seal disposed on the interior side of the door around and inward of the door periphery, the seal sized to be retained in the groove, the elastomeric seal in cross section having a central core portion, the central core portion extending from the bottom of the seal to the top of the seal, the seal having a bottom pedestal portion positioned at the bottom of the central core portion, a pair of opposing tangs protruding laterally outwardly from the central core portion, the tangs sized with respect to the groove to be deflected upwardly when the seal is inserted into the groove whereby the tangs compressively grip the side walls and provide a resistive force opposing removal of the seal from the groove, a first and a second laterally protruding upper groove engaging projections, the first groove engaging projection engaging a side surface of the groove and the second groove engaging portion having a notch portion and engaging the opposing side surface of the groove and the upper ledge at said notch portion, the first groove engaging projection, the second groove engaging portion, and the central core positioned intermediate the first and second groove engaging portions being laterally compressed between the two opposing side surfaces of the groove, the seal further comprising a finger member extending obliquely and laterally from the central core portion and positioned above the upper ledge;
• wherein when the door is received in the door frame closing the open front of the container portion, the corner sealing portion engages the finger member extending obliquely to deflect said finger member downwardly and further engages the top of the seal at the core portion.