ADvice on replacing seals on Bosh DIshwasher?

BOsch dishwasher SGS 40 12 GB/13;FD 8009 700 101.

Problem.Leaking from area of bottom left of door. I reckon cause is wear/tear to door rubber (?)seals and/or the seals situated on front of sides of the dishwasher.

Can anyone advise if it is easy to remove and replace the seals and confirm whether or not replacement seals require gluing?