I would need to see your model for sure but it looks like the clear hole and the black and white cylinder are the same size and thus these two surfaces are coincident. there needs to be an air gap for these items to render properly.
Ok I will try this...
It may also depend on how the text and markings are applied to the models.
If those are decals in Keyshot, you may need to adjust their "depth". It could be that they are "bleeding" through one side of the model, and "wrapping" around the other side.