I just finished rebuilding the lift cylinders on my ML112, and these are the parts used. You'll need a set for each cylinder
St-125    -                1-1/4 Urethane wiper
1250/1500/250-U  -  U12-1.25-25B Urethane U-Seal  1-1/4"x1-1/5"x1/4"
PS1400-32            -  PFTE Piston Seal 2" O.D.
B70-224               -  #224 Buna O-ring
BUR-224               -  #224 Nitrile Back up Ring
B70-136               -   #136 Buna O-ring
B70-018               -   #018 Buna O-ring