US Patent 9520310 Wafer container with door interface seal

A wafer container may be a front opening wafer container comprising a container portion and a door, one of the container portion and the door having a radially installed seal with a plurality of opposing lateral projections that deflect from a normal position in a direction away from an install direction when the seal is installed in a groove, the lateral projections resisting removal of the seal after the seal is seated in the groove. A core portion and a cantilevered finger member engages the other of the door and container portion when the door is seated in the container portion. Other lateral projections on the seal effectively seal the path between the seal and groove surfaces.