www.eagleburgmann.co.uk/
but i am not shure if that's a help for you.
Maybe they can tell you an adress of a local shop.
My first water pump sealing was from a local industrial suplier.
They sell bearings, sealings and stuff like this.
As the price was somehow high (about 40Euro if i remember right)
i searched for another source.
About 40km from here there is a Burgmann service point. I asked there and got 10 sealing packs for about 20Euro each.
But without a invoice
At the moment there is nothing left.
Maybe i should try to get somme more of them.
ciao Joachim