Screw cap

Type of closure for bottles A PCO 1881 screw cap on a plastic bottle A screw cap or closure is a common type of closure for bottles, jars, and tubes. A "sports cap", which appears on many water bottles, seen in closed configuration at left and in open configuration at right, allowing the water to pass around the central blue piece. History Screw caps had been used in Europe since the 1500s and a British patent was filed in 1810 by Peter Durand acting on behalf of Nicolas Appert. In 1858, John Landis Mason patented a screw-on lid for a jar that became known as the Mason jar. The screws and caps on PET beverage bottles were standardized in the 2000s by the International Society of Beverage Technologists (ISBT) as the voluntary standard PCO 1881, replacing the older and taller PCO 1810 standard. Usage Common screw closures (from left to right): Plastic bottle with plastic screw cap, Dispensing closure for salad dressing (with inner seal), Break-away closure for syrup, Dispensing pump closure, Dispensing closure (with inner seal), Spray pump, Metal closure on glass jar, Child resistant closure, Cap on toothpaste, Measuring cap plastic screw cap with break-away tamper-evident band A scr