Homebrewing Stack Exchange is a question and answer site for dedicated home brewers and serious enthusiasts. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Is there a special way of sealing PET bottles? This is the first time I have used these bottles so I just screwed the cap on by hand until I thought it was tight. I have had 8 flat bottles so far and was wondering if there is a special way or tool to put the cap on.

I would like to keep using PET bottles but need help sealing them, as I don't want 8 flat bottles every brew.

Cheers, Bill

share|improve this question

None that I know of, perhaps someone will have more insight on that.

A question: Are you re-using soda bottles? If the caps are in good condition they should work fine...

And a tip: you can still carbonate the flat beers by adding some extra sugar to it, closing and placing in a warmer place (I assume you chilled them). The yeast should still kick back into life to carbonate it. Don't need to waste them.

share|improve this answer
Thanks for the advice. No they are the proper brown Pet bottles and I used new caps to seal them. I will try and regas the next one I find flat as I didn't think I could regas them. Will let you know how it works out. Cheers Bill – user3254 Mar 18 '13 at 11:38

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.