One of the more common styles is Continuous Thread Closure, or CT. Packaging Options Direct offers a wide variety of plastic CT closures which consist of a finish that has one non-interrupted thread that spirals downward toward the shoulder of the container. There are industry standard specifications such as 400 or 410. These standards call out critical dimensions and tolerances for continuous thread closures, and can simplify the process of matching a closure to a bottle or jar. To learn about selecting the correct closure read our blog post.
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