This may be a bit Off Topic for this forum.
Bought an item with a mixed assortment of potentiometers. One of them was broken though.
It's probably a mix of surplus components.
Not sure what material the brown stuff is made of, it sort of looks like some sort of compressed paper of sorts.
The track might be of some special material. I checked it with a multimeter, and it's nonconductive.
I thought about perhaps gluing the broken parts together, but I'm wondering if the glue would interfere with the function of the pot.
The frame could be glued back together. But the track is a different matter perhaps.
That broken circular thing in the second picture is the track on which the wiper of the pot is tracing around.
It's not that important though. If it can't be repaired, I can just have it to show how "pots" look like inside.
