Wheaton 239259 Black Phenolic Screw Cap with PE Poly-Seal Liner, 28-400 Size (Pack of 144)
- Black phenolic polycone cap: Fits vials and boston round bottles with a neck size of 22-400. Please make sure your bottle next size is 22-400 to ensure a correct fit.
- Leak-proof seal: These caps will completely seal your liquid contents and prevent leaking.
- Easy design: Caps have a ridge around the diameter making it easy to grip and screw/unscrew with ease.
- Strong and durable: These caps are made of phenolic materials and can be reused over and over.
- Large quantity: This package includes 50 pieces.