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Q. to the pros -leaking thumb tube

Author: m1964
Date: 2025-11-17 07:32

Hello,
I hope someone will help me out with this:
A friend asked to check his plastic Buffet Prodigy because the clarinet feels very resistant.
I checked and felt it was leaking, so took it home, plugged all the holes and it still was leaking.
Tested in a glass of water and found the thumb tube leaking.
Does the thumb tube need to be removed and re-sealed?
Or, can I just put a bead of superglue around the tube?
If needs to be removed, what is used to reseal it? Wax?
I am very hesitant to even slightly heat that tube.
Thanks

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Re: Q. to the pros -leaking thumb tube

Author: clarnibass
Date: 2025-11-17 09:22

In theory the crack might have some greasy dirt that would prevent the glue from sticking, so ideally you'd want to remove it and then glue it. In practice just putting liquid super glue around the rim works fine 99% of the times and what I would do. You can wick a thin liquid cleaner (e.g. lighter fluid) in there but then you really want to make sure you remove it (with air pressure and time) before gluing it. It's usually so thin that it can take some time until it really evaporates and is completely gone.

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