A sample from the products for the Crankcase include: O Ring,9mm, Gasket,10x14.5x1.5 (nas), Plug,main Gallary,18x, Plug,oil Drain,12x15.
On this parts fiche the Gasket,10x14.5x1.5 (nas) is the most specified component.
The most reasonably priced component used on the El250e3 Eliminator 1993 Netherlands Fg Crankcase is the O Ring,10mm.