CRX2000-1031 Red PTFE/White Silicone septa + Blue screw cap Closed top, for 2ml 9-425 screw top glass vial, 100/pk Cap only for 9-425 Screw Top Vial Caps only without Septa Available in blue color Part No Description CRX2000-1040 Blue screw cap with hole, no septa, for 2ml 9-425 screw top vial, 100/pk Septa for 9-425 Screw Top Vial