As the closure is secured, a “click” indicates it’s locked onto the tube’s neck.
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Rexam Closures & Containers offers a 1-piece, senior-friendly, child-resistant tube closure for the personal care market called TubeLoK. Closure has a push-and-turn mechanism that is designed for prescription and over-the-counter products in the form of creams, ointments, gels, and jellies.
As the closure is secured, a “click” indicates it’s locked onto the tube’s neck.