I've replaced the shift shaft lever seal on three of my R65's and never found anything like that .
Sometimes, if you can't find a part on the R65 parts catalog, going to the R100 bike of the same year and it may be there .
Also on installing the seal, you need to get it in straight .
I had the transmission from my '81 R65 rebuilt in 2007, when got it installed, I could up shift to 5th gear, but could not downshift .
There seal was installed crooked .