Chromatography Vials, Caps, Septa & Inserts, Tubes, Crimper, 5).PTFE/Silicone Septa Φ20*3mm Temperature Resistant -60-200 with 9mm thread. 6).Crimp-top Aluminum Cap, 10mm Centre Hole Φ20m. 7).Crimp-top Blue Magnetic Aluminum cap, 10mm Centre Hole Φ20mm available.