Average Reviews:
(More customer reviews)I bought these, tested them on 5 gallon jugs and found they are not water tight. Though not advertised as water tight, I assumed so since they would typically be used on drinking water containers (i.e., "emergency water stash"). Since they are not water tight, then they aren't air tight and should not be used for long term potable water storage without the use of disinfectants (i.e., chlorine).
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This simple but effective item is the heart and soul of keeping your purified water contained. This 55mm crown or snap-on light blue cap is the industry standard cap for 3 and 5 gallon water bottles. Its standard intergrated cup seals both the interior and exterior neck of the bottle. Release tab on the outer edge makes removing the cap a breeze. The cap fits both glass and plastic 3 and 5 gallon bottles with a "crown" or "snap-on" top. They are sold two per pack. For reference, outside dimension for the bottle opening would be 2.165 inches. If you currently have a snap cap for the bottle the outside dimension of that cap is about 2.75 inches. ..... Look for this product in a 12 pack for discount pricing.
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