2 ml hplc vial | Sigma-Aldrich. Search results for 2 ml hplc vial at Sigma-Aldrich 27261-U black polypropylene hole cap, thread for 8-425, PTFE/silicone, Top Hat (septa and closure designed to fit together tightly), for use with 2 mL vial, 4.6 mm opening, pkg of 100 ea. 9mm Sample Vials for aijiren Technology--aijiren Vials for HPLC/GC