5 Gallon Mylar Bags with 2000cc Oxygen Absorbers (10) with PackFreshUSA LTFS Guide

Very good quality mylar bags. These are thicker and stronger than some "imported" bags that I purchased at retail and discarded due to leakage. I primarily use these for packing grains and legumes to preventing rancidity and insect infestation during long term room temperature storage. I pack the food products, add oxygen absorbers, evacuate as much air as possible by folding the bag down upon the contents, and use a clothes iron to seal the top of the bag. Since oxygen comprises approximately 20% of the air around us by volume, the use of oxygen absorbers will "suck" the bag down around the product and give you a good visual clue as to whether the seal remains good. If the mylar gets a puncture or the heat seal fails, the pressure inside the bag will again equalize with atmospheric pressure and the bag will feel loose.

As some others pointed out, because of the large size of the 5 gallon bags (30 inches x 20 inches), they are folded into quarters before shipping. This results in a bit of mylar flaking off at the corners where the folds are. You can see through those little pin points if you hold it up to the light. However, it doesn't impact the integrity of the bag. Every one of them pulled a vacuum after being sealed with o2 absorber placed inside. Since the metal layer is what keeps oxygen out more effectively than plastic, it's conceivable that miniscule amounts of o2 could seep in through those tiny little pin points. But since 99.99999% of the surface of the bag is still perfect, I can't imagine that enough could get in to change the long term shelf life of whatever you are storing inside.

I am using them to store "emergency" dry goods. Without the ten year test I am saying they are a great product and a great combination. I wish they were more shaped to fit the bucket but they work. If you are going to heat seal them get a good sealer, or make sure you iron them well enough. I have a cheapy sealer and had to run them a couple times to seal. I don't think it is the bag just the sealer. At least they aren't so thin it burn right through them. My two cents worth.

These bags are thick, and large enough to line a 5 gallon bucket. They aren't shaped it fit, but they are big and tall enough. The oxygen absorbers are a nice touch, but as other reviews said, it would be better if they cam individually wrapped instead of all together. The good news for me was I had plans to use all of the bags and absorbers at one time anyway.

I would like to see conversion charts and multiple sized units of Oxygen Absorbers.Converting units to units was difficult for me. I had to go to the web to convert things like pounds to gallons to figure out how may Oxygen Absorbers to useMy seal a meal worked great sealing the edges of the bags. But when I wanted to do larger bags I tried using an iron.Items that are dusty, like flour, make sealing the bags difficult. You need to be careful to make sure the flour doesn't coat the inside of the opening of the bag. If it does, the bag won't sell.This is the first time I have used these mylar bags, so I don't have any long-term experience to share.

These are the best Mylar bags that I have found. They are thick,sturdy and seal easily. The price for the combined product, bags and oxygen absorbers, is fair - good value - great quality for the money. The bags seal easily with a hair straightener set at 350 degrees. The bags seal so easily that I didn't need assistance from another person to complete the task. As an added bonus, they are made in the USA! Would highly recommend.

I recently ordered these , im new to this and had some concerns . I contacted the seller , and within hours had a reply . They answered my questions and provided even more info than I asked for . The quality of the bags is great , feels thick and durable . They also came with a leaflet giving instructions on how many absorption packs to use for several different foods for storage . I was impressed by both the product and the customer service . I will recommend these to others and when needed I will be a return customer .

These were thicker than I expected and worked perfectly for my task which was filling 5 gallon food grade buckets with rice, beans, and sugar. They make great liners and a perfect extra line of defense against vermin, bugs, etc. I also used a bag to cut down to different sizes, just ironed the edges to for a pocket. These also came with O2 absorbers which was convenient. Overall I'm glad I purchased these, though slightly more expensive than the generic competitor.