Z-FILTER MEDIA PACK ARRANGEMENT; AND, METHODS
A filter cartridge arrangement for use in an air cleaner is described. The filter cartridge comprises a coiled media arrangement, having a seal arrangement molded directly to the coiled media arrangement. Methods of molding the seal arrangement in place are described. Also described are methods of forming a central seal plug, and methods for attaching a handle to the arrangement. A method for sealing lead and tail ends of a single facer strip, from which a media pack of the filter cartridge can be formed, is also described.