(Renton, WA)  --  The Seattle Seahawks are looking to fill a void on the defensive line, following the loss of Brandon Mebane to free agency.  The team has signed former Patriots defensive tackle Sealver Siliga to a one-year deal for a reported one-point-four-million dollars.  The Hawks have also signed former Cardinals offensive tackle Bradley Sowell to a one-year contract for a reported one-point-five-million.  Seattle also signed punter Jon Ryan to a four-year deal for ten-million dollars.