Great question — answering as the UphillTech team:
All of the ones I've encountered over the years have slid on. You might have to loosen it up with some penetrating spray. If you have a correct deep socket, you can probably remove the valve stem without removing the chrome collar. Then, just replacing a washer should do the trick.
Full answer by JACK: https://diy.stackexchange.com/a/329919 (CC BY-SA 4.0).
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