How about finding the seal MOB can it be sourced locally?
unfortunatly not, I looked, and you know when I say I looked, it was in depth..
I found one close, but unfortunatly the o.d. was a half thousandth undersize, and that was not gonna work because these tend to pop out on their own already most of the time..
you can get them from Kaw tho, readily available from that p/n noted in the link Dave morrow posted with the process ( I gave the numbers in the coolant gremlins artical in the concourier also).
even so, when I get a new one and prepare for an install, I "expand" the outer shell by putting the flatside down on my anville, and use a thinwall socket I have that fits just inside of the seal "cup", and smack it with a hammer a good whack, to flare it out a smidge, so when I insert it I have to use force, its fully rubber coated, so it stays put well being flaredout about .001"