Vials Our vials are made of plastic polystyrene and are crystal clear. The raw material is pollutant tested and approved for contact with food. product number material height outer dimension volume plug diameter 41171 plastic , PS (polystyrene) 105 mm 48 mm 170 ml 49 mm product number material height outer dimension volume plug diameter 40300 plastic, PS (polystyrene) 64 mm 28 mm 30 ml 26 mm