Colpak TC-712-1 Clear 1st Hydrol Class Shell Micro-Insert Vial, 1 mL, 8 mm PE-Plug, 40 mm x 8.2 mm (Pack of 200): Amazon.com: Industrial & Scientific.
Shell vials and PE plugs are an easy and quick to seal vial-closure combination. Shell vials are used for non-critical HPLC analyses.