The invention relates to a press body (1), adapted for a press seal having an elastomer body (91) for contacting a conduit sealingly, said press body (1) and a tensioning bolt (212) for tensioning said press body (1), wherein said press body (1) can be pressed onto said elastomer body (91) by tensioning said tensioning bolt (212) in such a way that said elastomer body contacts said conduit sealingly, and wherein further said press body (1) comprises a read out member at which a force transmitted to said elastomer body (1) during said tensioning of said tensioning bolt (212) can be read out.