Plain Desiccator Desiccators are enclosures containing desiccants for preserving moisture sensitive products. These desiccators are molded with high quality plastics which are light and easy to handle. Silicone O-ring assures tight seal down to 0°C without using grease. Bottom part of the desiccator comes with thick perforated polypropylene disc. Use with disposable or reusable desiccant. Bottom part of the desiccators is white in color. Vacuum Desiccator Vacuum desiccators are molded with high quality plastics which are light and easy to handle. Silicone O-ring assures tight seal down to 0°C without using grease. Polypropylene stopcock with PTFE. Bottom part of the desiccator comes with thick perforated polypropylene disc. Bottom part of the desiccators is white or transparent in colour.