Aluminum layer - can your bags act as faraday cages?

I have not tested this so I cannot say if they can or not. I do know that aluminum foil does, and it works very well.

whats the thickness in mils

I don’t know however, I bought two packs of 20 pcs each. They are perfect, I used all of them, each bag with one 2000cc oxygen absorber.

Safe for water storage? Any leaking issues?

I use mine for food storage. I have to seal them with a flat iron...so I dont think they will work for water. I did get some that have a ziplock seal included -but this was not that version.

One of the reviews says your bags melted with a hot iron. Should a cloth be placed between the iron and mylar bag when heat sealing to prevent melt?

No, they are supposed to melt together.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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20 Pk 5 GALLON Mylar Bags and 20 x 2000cc Oxygen Absorbers Mylar Bags for Food Storage for Grains, Wheat, Rice, Pasta, Dog And Cat Food, Dry Aging Bags for Meat - Long Term Food Storage with Oxy-Sorb

Product ID: 356990401

Details

Brand
Lestpola
Capacity
5 gallons
Closure Type
Fold Top
Color
Silvery
Item Weight
7.05 ounces
Material
Polyethylene

📦5 Gallon Capacity

🔒Airtight Seal

🛡️Food Grade Material

Description

🌟 Store Smart, Eat Fresh!

LONG TERM FRESHNESS - Equipped with 2000cc oxygen absorbers, these bags keep your food fresh for years, making them perfect for emergency storage.
TEAR RESISTANT DESIGN - Constructed with durable PET/AL/PE, these bags resist tears and cuts, providing robust protection for your supplies.
USER FRIENDLY SEALING - Heat sealable with a simple iron or hair straightener, ensuring an airtight closure that locks in freshness.
CONVENIENT TEAR FEATURE - Designed with a U-shaped tear for easy access, eliminating the need for scissors or knives.
ULTIMATE FOOD PROTECTION - Crafted from high-quality food-grade materials, these Mylar bags ensure your food stays safe from external elements.

This 20-pack of 5-gallon Mylar bags, paired with 20 oxygen absorbers, offers a reliable solution for long-term food storage. Made from high-quality food-grade materials, these bags are designed to protect your food from oxygen, moisture, and heat, ensuring maximum freshness and longevity. With user-friendly features like heat sealing and easy tear access, they are perfect for storing grains, pet food, and more.

Specifications

ASIN	B09C66FF4H
Brand Name	Lestpola
Capacity	5 gallons
Closure Type	Fold Top
Color	Silvery
Customer Reviews	4.6 4.6 out of 5 stars (200)
Included Components	Mylar Bag, Oxygen absorber
Item Dimensions W x H	23.62"W x 1.85"H
Item Type Name	1
Item Weight	7.05 ounces
Manufacturer	TB0044
Material Type	Polyethylene terephthalate，Aluminium，Polyethylene
Model Name	1
Model Number	TB0044-S
Number of Items	20
Number of Pieces	20
Other Special Features of the Product	Airtight
Shape	Rectangular
Size	One Size
UPC	619191809950
Unit Count	20 Count

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