The invention generally relates to a composite, comprising a layer sequence； wherein the layer sequencea) comprises as layersi) a first layer, comprisingA. a first ceramic, andB. a first layer surface,ii) a second layer,A. comprising a second ceramic,B. superimposing the first layer surface；b) comprisesi) a hole, connecting through each layer of the layer sequence；ii) a cermet；wherein the cermet comprises a first part and a second part；wherein the first part is comprised by the hole；wherein the second part is comprised between the first layer and the second layer；wherein the cermet is in one piece.The invention further relates to a process for manufacturing a composite, comprising a cermet feedthrough； to a composite obtainable by said process； to a device comprising a composite according to the invention； and to a use of a plurality of ceramic green sheets and a composition to produce a composite according to the invention.
