a plastic vial having a fill port with a structure that is easily collapsible , is sealable in less time , and that minimizes the residual stresses in the vial after it has been filled and sealed . the structure of the fill port includes a proximal end , with respect to the body of the vial , and a distal end , also with respect to the body of the vial . the proximal end is selected from the group consisting of a diamond - shaped end , an elliptical end and a circular end . additionally , the vial has dispensing openings that minimize the effects of distorting a dispensing end of the vial when the vial is opened .