Tamper-proof Aluminum Bottles

[frithy]

Has anyone used these bottles before? Are they good at preventing oxygen spoilage?

 

[frithy]

They come with some sort of stoppers for the cap. Maybe I could even add a little bag of some iron powder or something at the top to further prevent oxidation.

 

[frithy]

So, I asked the seller how much pressure these could hold and the response was it's untested. The bottles themselves are .7 mm thick aluminum. Considering soda cans are about .1mm thick and can hold 6 bar, I don't think it'll be a problem there. However, I'm more worried about the tops popping off.