Bazzle from Oz, also from the Benzworld forum.
I found your link on the SLKworld forum and cross posted to Benzworld.
http://www.benzworld.org/forums/r170...corrosion.html

I pulled my seals, luckily no rust BUT soap residue and both sides were damp.

Wiped them out with a damp rag, seals too, allowed to dry and sprayed Powerplus dewatering fluid in the recess (Powerplus leaves a light brown residue behind that doesn't seem to evaporate like CRC, WD40 kero based stuff).
Hopefully it won't hurt the seal but they will be easier to replace than to fix rust later.
Popped the seals back in.

Bazzle