does anyone know where i can get a crank seal for behind the flywheel?

Its for a 54plate vectra 1.9cdti, I had the dreaded rattle from the gearbox. So i have been and got myself a flywheel,clutchand slave cylinder (£500 later) got it all apart today and seen the crank seal leaking.

I have tied everywhere but no where do them, so i'm wating on a phone call from vauxhall in the morning

cheers guys