The most reasonably priced component used on the Nt700va Deauville 2010 (a) England / Mkh Gasket Kit A is the Washer Seal, 6mm.
twelve components are shown in this Nt700va Deauville 2010 (a) England / Mkh Gasket Kit A exploded diagram.
On this parts fiche the Washer Seal, 6mm is the most specified component.
