Filtration sealing system

A method for filter element installation, comprising:

• positioning a filter element between a first housing section and a second housing section, the first housing section having a first housing section border therearound, the second housing section having a second housing section border therearound, the filter element including filter media and a filter element border extending from the filter media in an x-y plane;
• mating the filter element with the first housing section and the second housing section at a mating interface between the filter element border and the first and second housing section borders, a first side of the filter element border engaging the first housing section border and a second, opposite side of the filter element border engaging the second housing section border, one of the first side and the second side of the filter element border comprising a plurality of axial projections projecting in a z-direction that is perpendicular to the x-y plane,
• wherein one of the first housing section border and the second housing section border includes a plurality of axial recesses recessed in the z-direction and complementally receiving the plurality of axial projections therein;
• wherein one of the first housing section border and the second housing section border includes an inner housing surface complementary with a circumferential radial surface of the filter element border so as to form a one-way-only fit of the filter element and the housing, wherein the one-way-only fit is facilitated by a radially extending recess in the x-y plane of the circumferential radial surface of the filter element border;
• and
• wherein the filter element border is sealed along the mating interface, including being sealed at all of the plurality of axial projections and all of the plurality of axial recesses, and blocks fluid flow across the filter element border, including blocking fluid flow across the plurality of axial projections and the plurality of axial recesses.