Seal from what ???

OK now i know what your talking about.that helps keep dirt out it goes back into spindel. alot of new seals dont have that any more unless the dealer still has them.(i take that pan off it semes like the brakes run cooler&rocks wont get traped in them & it doset blow as much brake dust out on wheels) i hope i anserd your ??? im shour someone els could tell ya more a bout it.