Just as a note it looks like Silver is really cathodic on the galvanic table
here so that if coupled with brass which is more anodic it basically can end up making a little battery cell that will corrode the brass. Also it looks like steel is higher on the list making more of an anode. I bought some carbon fiber pultruded tube from a hobby shop
here that was pretty cheap. It's 1/8" O.D. and about .064" I.D. (slightly bigger than 1/16" I.D.) that I was planning on using as small bushings for the pivot. Seems most razor's pivot is about 1/8" so a small bushing like this should slip right in and the tube could be cut so its shorter, I think Bill Ellis does this on a razor in his restoration CD using some brass tube. I think with silver this will avert the possibility for corrsion between the steel of the razor and silver pin on the pivot.
Edit: Looks like carbon will cause the same problem, guess as long as its kept dry it shouldn't have the electrolyte to conduct.