Hi Randy, did you ever get a response on the rubber seal? I just changed my impeller on my 1993 Force 120 and for the life of me i couldnt remember where that rubber seal went, (yeah it was just 10 minutes after I'd taken it off). It either was just above the pump housing or it was just under the pump housing and in between the pump housing and the metal impeller cup, On the drive shaft of course. Same diameter as the drive shaft and maybe an 1/8" thick, right?