Vials, screw top with solid green Thermoset cap with PTFE . Vials, screw top with solid green Thermoset cap with PTFE liner, preassembled, pkg of 100 volume 15 mL, amber glass vial, O.D. × H 21 mm × 70 mm, thread for 18-400; find Supelco-27003 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich.