With a quantity of two pieces, the O-ring. is the most used part in the EOP-2 diagram.
The most reasonably priced component used on the Nps50 Zoomer.dx 2011 (b) Japan Af58-190 Eop-2 is the Washer Seal, 6mm.
A sample from the products for the Eop-2 include: O-ring., Oring 183, Gasket,l Cover (nas), Gasket,stator Bas (nas).