A liquid sealant applicator system that may include a liquid sealant applicator having a coupling to reversibly connect to a source of liquid sealant, a sidewall extending from the coupling and defining a sealant flow path, a flow restrictor that restricts the sealant flow path to an annular pattern of apertures in the flow restrictor, a porous matrix that fills at least a portion of the sealant flow path downstream of the flow restrictor, a matrix retainer configured to retain the porous matrix within the sealant flow path, and a fastener socket connected to the sidewall and having a distal end configured to be placed over and at least substantially enclose the head of a preselected fastener. The applicator is configured to provide a uniform application of sealant from the source of the liquid sealant to the head of the fastener enclosed by the fastener socket.