Of all the components that make up this Gasket Set the O Ring(d:3.1,id:32.7) has the lowest price.
Some items from this specific schematic: Gasket,magneto Cover (nas), Gasket,muffler Joint (nas), Gasket,tensioner Adjuster (nas), Gasket Set (nas).
On this parts fiche the Washer(10.6x25.5x2.3) is the most specified component.