This Headspace cap septa, use for magnetic screw caps, available in Teflon silicone,and high-temperature options. Read More; HPLC Caps. Caps for 9-425 vials,the most popular caps for autosampler vials, Read More; PTFE Silicone Septa. This Septa for 9-425 Vial, PTFE/silicone slit shape choices are Single, Y-shape, Cross available. Read More