38 mm Screw Cap with Hole
This reusable 38 mm screw cap will fit our 1 gallon and 1/2 gallon jugs and CBD Growlers. It is made of plastic and has a hole in the middle, which works best with our 3 piece airlock - item 7010. Perfect for small batch experiments or yeast starters.
It’s just a cap. I had to get one because these crack very easy on the 1 gallon fermenting jugs. The threads also don’t match up very well with the jug and I have heard others say the same thing. This is probably why they crack easily when screwing them on for a good seal.
Last cap I had from another brand split, but these feel pretty solid.
2 fitment issues though- the threads didn't line up well with my gallon jug- the diameter was right, but I had to push pretty hard to get it to a point where it would grab and seal.
Hole was too big for both of my airlocks (the s-bend variety)- I had to wrap them in a couple layers of silicone tape to get them to seal. With the modifications and a firm hand on twisting them on, they seem to have made a good seal, but it wasn't the out-of-the-box solution I was hoping for.
These fit on the fermenters great but boy do they crack easy. Not the best for use with airlocks. You better buy a bunch at a time, they dont last very long.
work good, just don't crank them down to hard
Works as needed