17 x 35 x 7 seal for so many mopeds. 
This seal is the crankshaft seal for both sides of a Tomos A3/A35/A55, Minarelli V1, and Morini M1/M01. 
Also fits the ignition side crankshaft seal for Puch ZA50 and Yamaha QT50. 
Probably fits many other bikes as well. Just check your old seals to confirm.