Seal arrangement for filter element; filter element assembly; and, methods

An air filter cartridge comprising:

• (a) a media pack including opposite inlet and outlet ends:
• (i) the media pack comprising filter media defining a set of inlet flutes and a set of outlet flutes extending between the inlet and outlet ends;
• and
• (ii) the media pack being closed to flow of unfiltered air therethrough without passage through filter media of the media pack;
• (b) a preform positioned adjacent a first one of the inlet and outlet ends of the media pack;
• (i) the preform including a radial seal support;
• and,
• (ii) the radial seal support having an outside surface;
• (c) a seal member positioned on the perform;
• the seal member including:
• (i) a radial seal region positioned adjacent the radial support outside surface;
• and
• (ii) an outer surface including a straight section at least 4 mm long extending at an angle, HE, of 30° to 60°, inclusive, relative to a plane perpendicular to a direction between the media pack opposite inlet and outlet ends;
• (d) a material molded to the preform and the media pack and securing the preform to the media pack.