Closure, 9 mm, Royal Blue, Polypropylene, PTFE/Silicone Septa, Smooth, Screw Thread, Open Top Type, For 12 x 32 mm LabBest R.A.M.™ Large Opening Vials, Designed to Work in Aijiren or Other Robotic Arm Autosamplers. Closure, 9 mm, Royal Blue, Polypropylene, PTFE/ Silicone Septa, S More SECO Part #: 10-4824-21.