Autosampler Vials, Membrane Solutions 2ml HPLC Vials, 9-425 Lab Amber Vials with aijiren Aluminum Silver Crimp Seals with Transparent TEF/Natural Rubber Crimp Top 20mm Silver Aluminum Vial Cap with Gray PTFE . Aluminum crimp-top cap, 10mm center hole, 20mm diameter, with gray PTFE/moulded butyl septa, 100/pk, CV2021.