I came across some of these parts and have no idea what they are. It could be related to bearings, but most likely not. I also have other, similar looking parts but of all different dimensions (with the same shape). Material feels quite hard, almost like ceramic, and is cold to the touch. I am based in the United Kingdom (if that helps). Seems to me custom made to required size (as there is a customer identification number). I have also included a photo of how they are packed and the label on the box
Text on the part itself and the label on the box:
- GC800-70GV2S
- 1909177
- 50/30 x 45 x 16mm
I am looking to find out what these parts are and their application.



