This Gasket Kit,a (mca) is the most expensive of the items that make up this Gasket Kit A assembly.
Some items from this specific schematic: Gasket,cylinder (mca), O-ring,5.6x1.9, Wash Sealing 9mm, O-ring 36.5x2.7.
In this schematic the "O-ring 36.5x2.7" is used most often.