The present invention relates to a method for increasingleakage resistance in a closed, pressurized system. Themethod involves providing a closed system including a containersealed with a septum having a top surface with an exposed section,which is maintained under a positive pressure of at least about 5psig. A contact surface of a hard component is fixedly placed adjacentto or in contact with at least a portion of a border section or acentral section of the exposed section of the septum, or both, to reducethe size of any bulge or deformation formed in the exposedsection of the septum. The present invention also relates to a kit forincreasing leakage resistance in a closed, pressurized system,which includes the hard component.
