The 18-400 Black Ribbed Phenolic Cap with Cone-Shaped Insert is engineered for precision sealing and optimal performance in laboratory and industrial applications. Constructed from high-quality black phenolic material, this cap offers both durability and resistance against a variety of chemicals. The cone-shaped Polyseal liner is specifically designed to mold around the sealing areas as the cap is tightened, ensuring an airtight closure that significantly reduces the risks of leakage and evaporation.
This product is an ideal choice for applications requiring reliable chemical storage. Its robust composition not only provides an effective barrier against harmful vapors but also enhances the longevity of the contents within the container. Each cap is meticulously crafted to provide a secure fit, making it suitable for various laboratory setups and industrial environments.
Exceptional sealing capacity due to the cone-shaped Polyseal liner
Manufactured with high-grade black phenolic material for chemical resistance
Reduces the risk of leakage and evaporation
Compatible with standard 18-400 neck finishes
Ideal for laboratory and industrial applications requiring secure storage
The 18-400 Black Ribbed Phenolic Cap is your reliable solution for maintaining the integrity of your samples and chemicals, ensuring that your research and processes remain uninterrupted.





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