HPLC & GC Autosampler Vials with assembled 13mm Combination Seal: PP-Screw Cap, black, closed top; Butyl red/PTFE grey, 12mL Screw Top Storage Vial and Cap Combination Pack Product Specifications ; MATERIAL, Glass (Clear) ; VIAL CAPACITY, 12mL ; VIAL CLOSURE, Screw 15mm ; VIAL TYPE, Storage Vial ; VIAL SIZE, 19 x 65mm.