8mm hplc vial septa with caps Waters-Aijiren HPLC Vials Septa Waters offers a selection of cap, septum, and assembled cap/septum for various vial sizes. The range of septum material is limited to PTFE, silicone / PTFE, and polyethylene septumless caps. Black, 12 x 32mm Snap Neck Cap and PTFE Septum, 100/pkg Part Number: 186002645 Get Price