Won't you bugger the seals taking them out anyway. The best way to buy bearings is from somewhere like bearings r us or similar online bearing suppliersthey will sell the seals too. Look for the designation on the edge of the bearings and the seals will have a designation on them. I replaced mine on my old GPz750 for a fraction of the price Kawasaki wanted for them. Wheel bearings etc. are also much cheaper bought this way. If you struggle to match them up, just give 'em a call. 
You can pop most seals out using a large flat bladed screwdriver as a lever, dont foc about trying to pry them out, a quick bang on the handle usually gets them out with no damage.
Seems I've got lucky with two of the three bearings, and have found one for £13. Will need to also replace the radial bearing but its only a couple of quid.
I know I should probably change them all but its not for NASA
