On Thu, 3 Jun 2021 18:34:07 +0000, Suebea
wrote:

Soap worked wonders for me! I don't even think you need a specific brand. Just make sure you aren't attached to the bar, because it's going to get dirty.
I just rubbed it dry onto both the rubber part and the frame below it. Not even a whisper of a squeak. (I know it was 11 years ago, just putting this hear for anyone who may be curious and doesn't have fancy wax)

I've used this on rubber weatherstripping on my cars over the years,
with decent results: https://www.amazon.com/dp/B00GD49GTS

It was originally used by Honda on their cars years ago. I don't see
why it wouldn't work in this application.