Introducing the Nalge Nunc Closures, specifically designed for NALGENE Micro Packaging Vials. These closures are made from high-quality PPCO material, ensuring a secure and leak-proof seal for your samples. The NALGENE 362820-0110 Natural Closures feature a reliable design that fits perfectly with NALGENE vials, providing easy access while maintaining sample integrity. Ideal for laboratory use, these closures are perfect for storing liquids, powders, or other materials. Trust Nalge Nunc for durability and performance in your micro packaging needs!