This 33mm Polyseal screw cap is perfect for screw top 750 mL wine bottles and Boston Round Growlers. Each cap features a conical polyethylene liner to provide a wedge-type seal both across the top of the container and the inside diameter of the opening. The seal helps to keep the contents fresh and provides better pressure retention than standard metal caps for carbonated beverages. Buy a bag of 100 and save.
33mm Polyseal Screw Cap - Set of 100 Reviews
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