40 Ml Glass Vials found in: 40 ml Vial, Glass Amber, .125 TFE / Sil Liner, 40 mL Septa Vials, Target Crimp Top Vial System, 2 mL, 12 x 32 mm Glass Vials,.. these vials are assembled with the following materials: Type 1 borosilicate glass, PTFE/silicone septa, and a polypropylene cap. PTFE/silicone septa, and a polypropylene cap.