Patent ID: 7687034

Claim:
A reagent package comprising, a) a container having an inside chamber and an opening to said inside chamber, b) a rocker valve on said container at said opening, said rocker valve having a curved face portion and a pivot mounted on said container for pivotal movement of said curved face portion from a valve open position, wherein said rocker valve permits outside communication into the chamber through said container opening, to a valve closed position wherein said rocker valve closes said container opening to prevent outside communication into the chamber through the container opening, c) said container including an annular channel surrounding said container opening and a compressible annular cylindrical gasket seated in said channel, said compressible annular cylindrical gasket including a cross section which includes one end portion, another end portion opposite the one end portion, an inner radial surface and an outer radial surface, and an elevation from the one end portion to the other end portion which is greater than a radial gasket thickness measured between the inner radial surface and the outer radial surface of the cross section of the compressible annular cylindrical gasket, said compressible annular cylindrical gasket having said one annular end portion that engages said curved face portion when the curved face portion is moved from the valve open position to the valve closed position whereby, said one annular end portion is in annular sealing contact with the curved face portion of said rocker valve when the rocker valve is in the valve closed position, d) said annular channel including a radially inner peripheral channel sidewall and a radially outer peripheral channel sidewall, and a bottom portion, and e) said annular channel further including an inclined peripheral wall that intersects one of said channel sidewalls at an obtuse angle wherein movement of the curved face portion from the valve open position to the valve closed position deforms the compressible annular cylindrical gasket in a radial direction at each annular end portion within the annular channel.