When Seal, 11mm Diameter, Crimp, PTFE/Silicone/PTFE, silver. AR0-5760-13. imChem Vials – Swiss Labs. 1.5ml amber screw vial w/graduated marking spot, 8-425 thread. White PTFE/White Silicone Septa, 20mm Silver Aluminum Crimp-Top Cap. UE201201. Chromatography Vials, Big Mouth Crimp Top Convenience Packs . 32011L-1232A Chromatography Vials, Big