No matter what, these bags don't hold a vacuum for very long. I don't know why, but maybe they're just too thin? At first we thought it was an accident and we abused the sealant. But the sealing seems perfect. It must therefore be packages. We've started sealing at least two (2) times on each end, but they're still leaking. So if you're looking to seal something up for a long time, this might not be for you.
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