CPC F02M 35/02425 (2013.01) [B01D 46/0004 (2013.01); B01D 46/0009 (2013.01); B01D 46/0015 (2013.01); F02M 35/0245 (2013.01); F02M 35/02433 (2013.01); F02M 35/02491 (2013.01); B01D 2265/028 (2013.01)] | 20 Claims |
1. A filter element comprising:
a filter media pack having an inlet end, an outlet end and an outer periphery extending between the inlet end and the outlet end, the inlet end and the outlet end being separated along a central axis;
a frame supporting the filter media pack, wherein the frame is quadrilateral including a pair of first sidewalls on opposed sides, and a pair of second sidewalls on opposed sides and extending transversely between the first sidewalls; and
a housing seal arranged about the filter media pack, wherein the housing seal has an axial seal surface for forming an axial seal that undulates axially to form valleys over at least a portion of the housing seal; and
wherein the axial seal surface is undulating in a first direction extending along the first sidewalls and is linear in a second direction along the second sidewalls.
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