The lowest price component in this Gasket Kit A parts-list fiche is the Gasket,ex.pipe (nas).
Some items from this specific schematic: O-ring C Case, Washer,sealing,6., Gasket Kit,a (nas), Seal,valve Stem.
The sub assemblies and components that make up this Gasket Kit A include this Gasket Kit,a (nas), the most expensive part.