1 Gallon Jug Airlock Cap

  • Item #P93
  • Price: $0.49
  • Part #
- +

In stock, will ship on Thursday, August 11

This 38mm plastic screw cap features an airlock hole in the center (accepts all plastic airlocks). Handy to use with 1 gallon screw cap jugs when making mini fermenters.

Average rating 6 out of 10 ( based on 2 reviews )

Works Great

Review by Matthew on 8/21/2013

I have 5 of these on 1 gallon fermenters and they all arrived in good condition and make for a convenient seal with my air locks. Love them.

Don't buy these

Review by Adam on 8/2/2013

I don't know if it happened during shipping or if I screwed it on too hard, but my cap had a crack in it that let air seep out instead of going through the airlock. Hopefully it won't compromise my brew. I wish I would have decided to go with a bung instead.

May 23, 2019 by Andrew

Q: Do these work on 1 gallon plastic jugs? Or only on glass?

A: These also fit on standard plastic jugs.

Sep 04, 2018 by Gil

Q: I have some of these air lock caps however the holes were too big for my air locks and had to rig a rubber ring to make then air tight . I want some caps that are made to fit the air lock to be air tiight. thanks

A: Ours say 'Vintage Shop' on them, so if these are the same as the ones you already have, they will not work.

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