Item DescriptionSeal your liquid bottles tightly with Labelmaster's Polyseal® Phenolic Caps With Polyethylene Cone Liners. These fit a 32-oz. glass bottle or 4-oz. French square bottle with a mouth size of 33/400. The cone liner provides a wedge-type seal that seals both across the top of the container and the inside diameter. This black bottle cap is stress crack-resistant and offers superior torque retention and excellent sealing characteristics.