Introducing the Nalge Nunc Closures, designed specifically for NALGENE Micro Packaging Vials. These closures are made from high-quality PPCO material, ensuring durability and a secure fit. Each closure is sterile, making them ideal for laboratory and medical applications where contamination must be avoided. The natural color of the closures complements the vials perfectly, providing a professional look. With the model number NALGENE 342820-0116, these closures are easy to use and provide reliable sealing for your samples. Perfect for researchers and professionals seeking quality and safety in their packaging solutions!