This Cap is too small for our current 6.5 Gallon Carboy (U7007) with a standard neck. See our Standard Carboy Cap for that carboy.
Customer ReviewsWrite a review
Useless. Does not fit either of my 6.5 gallon carboys.
I was using a rubber stopper that always wanted to pop out. Most times I needed to do a heavy tape job around the stopper to keep it in. Big hassle anytime I wanted to check gravity. This cap fits perfectly snug...seems to be airtight as my blowoff tube bubbles like it always did. I don't recall the size, but I had some tubing laying around that fits around the smaller cap stem for very easy blowoff tube setup. Best $4 I ever spent.
I wanted to use this for blow off tubing. It isn't an ideal fit, but it works. Like one reviewer said, it is rough on the inside. I hope this doesn't help harbor bacteria or yeast. Sanitize well. It is pretty cheap.
I have 2 of these for both of my 6.5 gal. carboys. Fits snuggly and is actually a little difficult to get off. I run a 1/2" SS thermowell down the middle and a length of 3/8" silicone tubing off the side as a blow off/airlock. Works perfectly.
Bought it for my 6.5 carboy, and was disappointed to see that it did not fit very tight around the top. It works, but it seems a little too loose. Only other complaint is that the holes are extremely small, and do not fit the racking cane like the instructions say. I really had to stretch it out in order to get the racking cane to fit._x000D__x000D_One great feature is that the siphon can be started by blowing into the other hole, no auto siphon needed. Check out Google for some good videos and pictures on how to do this.