So the question was…will the flip top seal when taken to 6000 feet (The average equivalent cabin pressure when an airliner goes to thirty something thousand feet)
It does! Took a 32oz bottle of homebrew on a trip to share with the family…not a drop was wasted. ;D
I guess I can’t see why it wouldn’t.
Well, I would think that if the pressure get’s high enough, that little rubber seal is going to burp…
Maybe so, but I was under the impression that the cabin and hold pressure was controlled.
When I moved to CO, I brought lots of already-bottled beer with me, and the elevation gain was almost 9,000 feet. No problems yet, although some of the beers with higher carbonation foam over when opened.
The pressure difference in going from sea level to 6,000 ft is only about 2 psi. For the area of the bottle neck, you could pull on the top with more force.
Edit: Totally unrelated, but when I went home for the holidays this year I traveled with 29 beers in my checked bag. TSA really seemed to enjoy searching it and running every single bottle/can through the scanner… my Xmas gift to them.
It is, but the cabin does not stay at sea level. The differential would be so large that the airplane would have to be built much heavier. It’s a ratio. The cabin (and that includes the cargo bins) climbs and descends as well, but not as much. When the airplane is at cruise altitude (30-42000 feet), the cabin is somewhere between 5000 and 8000 feet depending on actual airplane altitude and the model of the airplane.
So they’re allowing full glass bottles on planes? I thought you couldn’t bring these types of items on-board.
Not for passengers… I’m driving. 
It’s funny, not full bottles, but empties are ok. Break one of them and you have a handy and effective weapon.
I remember the days fondly when I could bring 2 cases of beer onboard, but the little-old blue-haired lady behind me couldn’t bring her eyelash curlers.
How did it taste at that altitude?
Eh, no…that would be a bad career move, and LHBS would not be happy.
For a second there I was going to ask why use a 3 oz flip-top bottle.