Maryland Cork, Manufacturer of Granulated Cork, Home Page Cork, granulated cork, Glass mold release, Cork insulation tape, cork bulletin boards, cork for shoe soles, Battery mold release, engine gaskets cork, Cork insulation, Duck decoys, Expansion joints, Composition cork, Grinding wheels, Wine filters, Cork shoe filler, Theatrical dirt Maryland Cork Co. is the only producer of granulated cork in the United States and has been in business since 1947.