Introducing the NALGENE 362150-4240 Green Caps, designed for durability and versatility. These polypropylene screw caps are perfect for securely sealing your laboratory containers, ensuring a leak-proof fit. The vibrant green color adds a touch of visibility, making them easy to spot in any setting. Resistant to chemicals and temperature fluctuations, these caps are ideal for various applications, from research to storage. With a reliable design that fits standard NALGENE bottles, these screw caps are a must-have for any lab or workshop. Upgrade your container sealing solutions with these dependable caps!