70-400 Black Metal Lid with plastisol liner
This lid is a black metal 70-400 continuous thread cap with a plastisol liner. Continuous thread caps have a single thread on the inside of the skirt. These typically require a full turn before the closure is properly applied. This closure fits a container with a 70-400 neck finish. The Plastisol liner has an exclusive relationship with metal lids. Plastisol is a PVC gasket that creates an air tight seal with a glass jar or bottle.