Vented closures allow container venting without leaking.
Both standard and custom-designed closures are available. Closures are equipped with Circumvent and AirFoil, patented vented liner systems that use hydrophobic film laminated to either polyfoam or heat-induction foil liners. Circumvent is designed to be used with a broad range of chemicals, including formulations with low surface tension such as detergents, solvents, oils, and acids. AirFoil is the only vented heat-induction foil available commercially, and it provides high seal quality and tamper evidence. Child-resistant closures are designed to be easy for elderly users who may lack hand strength.