Rubber Stopper- Size 11- Drilled
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It has a top diameter of 2 13/64 " (56mm) and a bottom diameter of 1 7/8 " (48mm). It has a length of 1 " and a diameter of 3/8 ".
That should be the case. Does a good job of fitting type L copper inside the 2" size.
Your 13 gallon antique carboy will fit this rubber stopper #11. As for the other two questions, I would follow the advice WisJim gave.
I thank you for your help. Three-eighths of an inch is the diameter of the hole in the center.
Selected User Reviews For Rubber Stopper- Size 11- Drilled
A vacuum pump adapter, like this one, is vital in the automotive garage. Despite exposure to a wide variety of chemicals, the rubber appears to hold up exceptionally well. There are several types of fluids such as oil, brake fluid, brake cleaner, and coolant.
There is rubber on the lid, and it stops holes in bottles and fits airlocks.
This clamp is made from rubber and has a hole in it, which is useful when you want to decrease the size of a big I don't understand why Amazon requires a review to be so exhaustive.
The rubber part seems to be of good quality and fits a size 11 flask perfectly.
Delivery is prompt and the product is of good quality.
I have a 15 gallon demi-john that fits perfectly.