A sample from the products for the Gasket Kit include: Packing, Drain, Gasket,ex.joint (nas), Gasket Kit (mca), Gasket,r.cover (mca).
The most reasonably priced component used on the Cr125r 1989 (k) Australia Gasket Kit is the Washer,plug,drain 12.
On this parts fiche the Packing, Drain is the most specified component.