No, I went and actually bought washers. Like I said, I bought 3/4" x 2" fender washers. The O.D. Is big enough to cover the hole, and the I.D. Is what is needed to go over the threaded shaft, may have to Dremel just a bit. The washers that came with I didn't use. Got my washers from fastenal, but make sure if you do, you get fender washers, not regular flat washers! Yes after install was complete I did run RTV around edge of washers and such to seal. Then just cleaned it up to make it look good!