A filter cartridge for use in gas/liquid separation; the filter cartridge comprising: (a) an extension of filter media surrounding and defining an open filter interior; (b) first and second end pieces (23, 24); (i) the media being positioned between the first and second end pieces (23, 24); (ii) the first end piece having a central flow aperture therethrough in gas flow communication with the open filter interior; and, (iii) the first end piece includes a perimeter rim having a portion projecting at least 3 mm toward the second end piece while completely surrounding the media; (c) a housing seal arrangement positioned on the first end piece at a location with at least a portion of the housing seal arrangement completely surrounding the media; (d) the housing seal arrangement including: a first seal member located at a position completely surrounding the media; and, a second seal member; characterized in that (e) the media comprises a multi-layer coil of media; (f) the second end piece has a closed external receiver therein projecting into the open filter and toward the first end piece (g) the external receiver in the second end cap comprises an eccentrically positioned receiver pocket defined by a projection tip projecting into the open filter interior and toward the first end piece, a distance of at least 10 mm from an end of the media adjacent the second end piece; (h) the cartridge includes a first preform comprising the second end piece and a central cartridge support; and, (i) the first end piece is part of a second preform secured onto the first preform after media is positioned on the first preform. (a) an extension of filter media surrounding and defining an open filter interior; (b) first and second end pieces (23, 24); (i) the media being positioned between the first and second end pieces (23, 24); (ii) the first end piece having a central flow aperture therethrough in gas flow communication with the open filter interior; and, (iii) the first end piece includes a perimeter rim having a portion projecting at least 3 mm toward the second end piece while completely surrounding the media; (i) the media being positioned between the first and second end pieces (23, 24); (ii) the first end piece having a central flow aperture therethrough in gas flow communication with the open filter interior; and, (iii) the first end piece includes a perimeter rim having a portion projecting at least 3 mm toward the second end piece while completely surrounding the media; (c) a housing seal arrangement positioned on the first end piece at a location with at least a portion of the housing seal arrangement completely surrounding the media; (d) the housing seal arrangement including: a first seal member located at a position completely surrounding the media; and, a second seal member; (e) the media comprises a multi-layer coil of media; (f) the second end piece has a closed external receiver therein projecting into the open filter and toward the first end piece (g) the external receiver in the second end cap comprises an eccentrically positioned receiver pocket defined by a projection tip projecting into the open filter interior and toward the first end piece, a distance of at least 10 mm from an end of the media adjacent the second end piece; (h) the cartridge includes a first preform comprising the second end piece and a central cartridge support; and, (i) the first end piece is part of a second preform secured onto the first preform after media is positioned on the first preform.