I am wondering if there is anyone that deals in a replacement part for a Smith's speedometer drive gearbox. I am working on an older AJS single that has the older style, (more square looking housing) Smith's speedo drive gearbox that is driven by the rear wheel. The ring gear in the gearbox is sealed by a rubber seal bonded to a steel outer frame. I would like to find a replacement for this seal. Most of these Smith's units I have seen use a thick felt seal, but this one I have, and I am sure it is original, has this rubber grease seal. It is very thin at only about .118 that presses into a channel in the back of the drive housing. The outer diameter is 2.553, and the inner diameter, or the diameter of the ring gear that it seals to is 2.17
I have tried the places I can think of that may have such a thing, McMaster Carr, Grainger, etc. with no luck. I am guessing it was a proprietary manufactured item that I am hoping someone has a line on. Anyone have any ideas?