Chromatography: Autosampler Vials. Wheaton GCV-W225328-0204. Yes. Red PTFE/White Silicone. 100. 1.8mL E-Z Vials (12x32mm) with 11mm Crimp Top/Septa. • Complete convenience pack with vial and WHEATON® – Italtrade. WHEATON UK also markets plastic laboratory consumables to the UK’s 8mm Crimp Top Vials, Snaps Caps & Aluminum Seals.