I am disappointed. I thought this would be the perfect solution. Unfortunately, once the bags are sealed and vacuumed, the bags immediately begin to leak. It's very frustrating to think they're holding a vacuum only to hear a "whispering" sound a few minutes later as they slowly inflate again. I followed the directions. I ran the gasket tongue over the cap about 5 times, then as a final step, squeezed the gasket with my fingers to be sure. I attach the cover as tightly as I can without stripping the plastic threads. After all this, however, they still lose vacuum. I can return these bags.
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