printting tubular glass vial tubular glass vial USP TPYE IA vial (also phial) is a relatively small vessel or , especially used ... of closure systems, e.g. Screw vials (closed with screw cap or dropper/), Lip vials (closed with cork or plastic ), Crimp ... vials (closed with a rubber stopper and a metal cap). A vial can have a tubular shape or a bottle-like shape ...