Seal arrangement for a high temperature fuel cell stack and process to manufacture such a stack

The arrangement has an intermediate unit (114) made from a metallic material and a coating made from ceramic material and extending over an entire top side of the intermediate unit. The intermediate unit is soldered through the coating with a housing part (112) of a fuel cell unit, by a metallic plumb at one position. The intermediate unit is fixed with a housing part (106) of another fuel cell unit at another position : An independent claim is also included for a method for manufacturing a fuel cell stack.