Well, that's good and bad news. Thanks for the effort Kawboy. At least that's one more we can rule out. I'm still searching around - may make a trip to the big city soon and see if they can come up with anything. Later.
Do you know which pump you have? If you have the one with the big single bearing (no c-clip), I can't help you as I never got a sample of that for the parts. If you have the other one with the c-clip, I can get all the parts for that to do a rebuild.
The bearings are all the same. It is the inner spring seal that comes in two dif sizes. The oil seal goes out usually due to a ban inner bearing. If you are lucky, you can re-use the inner spring seal. I did that on mine and I believe we did on Marks too. So far, mine is good to go, that was two years ago!

If someone could send me a sample of the different seal, I can find it here. I have the pump that uses a c-clip on the shaft and the seals are available here.
If we can find a source for mech. Seal that has a 28.75mm cup I will be as happy as a pup in a litterbox!
OK, the next time I get to Bangkok, I'll pick up some of both of these much seals. I'll let everyone know when I get them.