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Screw Cap (38mm) with Air Lock Hole
38 mm Screw Cap with Air Lock Hole for One Gallon Jugs
 
38 mm screw cap with airlock hole for one gallon jugs. Use instead of stoppers on gallon jugs for yeast starters or experimental small batches. Works best with a 3 piece airlock.

Airlock Hole Diameter: 7/16"
Price: $0.89

Availability: Usually Ships in 24 Hours
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Screw Cap (38mm) with Airlock Hole


Made of plastic this also fits most 1/2 gal sized growlers.

Average Customer Review: 2 of 5 Total Reviews: 1 Write a review.

  0 of 0 people found the following review helpful:
 
Not worth changing for it September 25, 2014
Reviewer: Philippe from Montreal, Quebec  
I used four of them on 1 gallon glass jar for small cider test batches. They will only work with 3 pieces airlocks. All four of them broked at some point: the plastic would crack above the screwing section. I ended replacing them with universal carboy bungs (the white ones, not made of latex).

Maybe if you screw them looser, then they would not crack, but I would fear about the impermeability of the system.

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