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<p>[QUOTE=&quot;DanF1739, post: 709597, member: 20670&quot;]Polyethylene bags are permeable. I don&#039;t know of any safe air tight bags. For boxes, there are some made of aluminum, stainless steel, or plastic that are probably fine. They&#039;d typically have a an o-ring to make the box waterproof. The most cost-effective boxes I&#039;d look at are made for ammo or kayaking (e.g. Otterbox or Pelican). I do not know for certain what plastics they use but I think those would be worth checking out. The waterproof&nbsp; bags I&#039;ve seen are almost always PVC so it&#039;s not even worth asking how airtight they are.[/QUOTE]</p><p><br /></p>

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