Flange fuskar da ta daga(RF) yana da sauƙin ganewa yayin da filin gasket ya kasance a sama da layin bolting naflange.
Fuska ta dagaflangeya dace da nau'ikan gaskets na flange daban-daban, kama daga lebur zuwa nau'ikan ƙarfe na ƙarfe da ƙarfe (kamar, alal misali, gaskets jaket da gask ɗin rauni na karkace), ko dai zobe ko cikakkiyar fuska.
Babban madaidaicin ƙirar flange na fuska da aka ɗaga shine a tattara matsa lamba na flanges biyu na mating akan ƙaramin ƙasa kuma ƙara ƙarfin hatimin.
Tsawon tsayin fuska ya dogara daflangeMatsayin matsin lamba kamar yadda ƙayyadaddun ASME B16.5 ya bayyana (don azuzuwan matsa lamba 150 da 300, tsayin shine 1.6 mm ko 1/16 inch, don azuzuwan daga 400 zuwa 2500, tsayin fuska yana kusan 6.4 mm, ko 1/4 inci).
Mafi ƙarancin flange gama gari don ASME B16.5 RF flanges shine 125 zuwa 250 micron Ra (3 zuwa 6 micron Ra).Fuskar da aka ɗaga ita ce, bisa ga ASME B16.5, tsohuwar fuskar flange don masana'antun (wannan yana nufin mai siye zai ƙayyade cikin tsari idan ana buƙatar wani fuskar flange, azaman fuskar lebur ko haɗin zobe).
Fuskoki masu tasowa sune nau'in flange mafi siyarwa, aƙalla don aikace-aikacen petrochemical.