vial 2ml | Sigma-Aldrichred PTFE/white silicone, diam. × thickness 8 mm × 0.060 in., for use with Screw Top vial, 2mL, 4.6mm I.D., 8-425 thread, pkg of 1000 ea Supelco pricing Vi Material: USP Type 1, Class A, 33 Borosilicate Glass Volume: 2ml (standard