My good neighbor is rebuilding an older Mercedes but there´s a slight problem.
He first tried ordering some Seal Rings from Germany but they couldn´t get them available.
I could use a help from some person, who could purchase/order these items first to him/herself, then ship them forward to me.
Price, shippings and personal costs will be covered! 
This is the part:
https://www.mynewbenzparts.com/oem-parts/mercedes-benz-seal-ring-vrlub-0089971247
…and 2 pieces are needed.
Have you asked MB directly in Germany whether that part may be special ordered or whether they know someone who could help you in Europe? It is a bit weird that a seal/gasket/Dichtring is not available in all key EU stores I looked into.
However, I found it here in Germany:
https://www.pkwteile.de/oen/0089970547?maker[]=74
Is that the right part? (you have to check Dichtring on top and then MB)
Thanks for the link, but I could not find the correct part number from those lists (0089971247) 