C2431, Closure and septa, For 20mm vial - Aireka Cells Nature PTFE/nature silicone septa, 20mm crimp-top aluminum closure, 10mm centre hole, 100ea/pkg Shell/PP Vial Vial Inserts For 8/9mm Autosampler Vials + Cell Chamber + Plate & Discs Quartz Discs + Disc-mar Disc201608 Quartz Plates + Sale +