What should you actually look for in Mylar bags for long-term food storage?

briancoopeer

New member
Jan 21, 2026
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Texas
www.kwickpackaging.com
I’ve noticed many threads asking about Mylar bags for long-term food storage, but most answers stop at “use thick bags” without explaining why certain specs matter.


From real-world use, a few things make the biggest difference:


  • Thickness (5–7+ mil): Thinner bags puncture easily and don’t hold seals as well over time.
  • Oxygen barrier quality: True metallized layers slow oxidation far better than standard plastic.
  • Seal area & structure: Heat-seal strength matters more than brand names.
  • Use case fit: Pantry storage, emergency food, and retail packaging all need different bag styles.

I found a category page that breaks down different food-grade Mylar bags with oxygen barrier protection by size, thickness, and structure instead of pushing one single option. It helped me compare what actually works for bulk storage vs everyday use : Custom Mylar Bags wholesale


Not recommending anything blindly just sharing a resource that explains options clearly. Curious what thickness or setup others here have had the best results with over 10+ years?