According to the present disclosure, features, components and techniques useable for providing air cleaner arrangements are provided. Many of the features relate to an axial seal arrangement provided on a filter cartridge. A typical filter cartridge, for use with these features, is a filter cartridge having opposite flow ends. Example media arrangements that fit this characterization are described. Seal arrangements provided with an axial housing sealing engagement surface are shown. A seal arrangement is provided with variations therein, to advantage. These variations can be in either or both of an outer peripheral edge surface and a housing seal engagement surface. Also, air cleaner assemblies having advantageous features therein are provided. Further, air cleaner housings are described, with selected, preferred features for engagement with filter cartridges.

A method of reinforcing a filter media pack as well as a reinforced media pack is provided. The method includes forming a media pack to have an inlet face and an outlet face. The method includes applying a reinforcing agent to the media pack. The reinforcing agent is applied in a flowable state. The method also includes hardening the reinforcing agent to form a reinforcing structure to reinforce the media pack. Filter element having such a reinforcing structure is also provided.

A fluid filter has a filter housing with inlet opening for fluid to be cleaned and outlet opening for cleaned fluid. A filter element arranged in an element receptacle of the filter housing separates inlet opening from outlet opening. The filter housing has a housing body with an installation opening to the element receptacle, through which the filter element in an installation direction is introduced into the element receptacle. The filter housing has a housing cover for closing the installation opening. The installation opening is arranged in a transverse side of the housing body that is lateral relative to the housing axis. The filter housing has a sealing surface, surrounding the housing axis at least partially circumferentially, for contacting a seal of the filter element. The filter element has a seal support device for the seal and the filter housing has a pressing device for the seal support device.

Various embodiments relate to a filter element. The filter element includes a first filter end, second filter end, filter media, and filter frame. The second filter end is disposed axially away from the first filter end. The filter media extends axially between a first filter end and a second filter end. The filter frame is adjacent to the first filter end. The filter frame includes a first frame end, a second frame end, a first frame endwall, a second frame endwall, a first frame sidewall, and a second frame sidewall. The second frame end is disposed axially away from the first frame end. The first frame endwall extends axially away from the first frame end toward the second frame end. The second frame endwall extends axially away from the first frame end toward the second frame end. The second frame endwall is disposed longitudinally away from the first frame endwall.

A filter element for an air filter assembly of an engine includes a primary filter media and a secondary filter media. The primary filter media has a plurality of pleats having first fold edges on an inlet face of the primary filter media and second fold edges on an outlet face of the primary filter media. The first and second fold edges extend from a first lateral side to a second lateral side of the primary filter media. The secondary filter media is constructed of a non-woven material and includes a first portion arranged on the inlet face of the primary filter media, a second portion secured to the first lateral side of the primary filter media, and a third portion secured to the second lateral side of the primary filter media.

A clean room supporting multiple air filter elements within a frame having multiple tracks to support extensions on individual edges of the air filter elements. Within the multiple tracks are a tape of elastic ultralow density polytetrafluoroethylene polymer having a specific density of always less than 1.0, preferably less than 0.8 and most preferred as greater than 0.25 and less than 0.6 positioned along the length of the tracks.

An air cleaner assembly including a housing, a filter cartridge removably positioned within the inner opening of the housing, wherein the filter cartridge includes a media pack and a sealing member that includes a pinch seal portion spaced from an outer surface of the media pack and positionable within a housing channel of the housing when the filter cartridge is positioned within the inner opening of the housing, and a precleaner assembly positionable between the filter cartridge and the inlet end of the housing, wherein the precleaner includes a base member having a lower edge, and an access cover removably attachable to an inlet end of the housing, wherein the precleaner assembly is sealable within the air cleaner assembly by pressing the lower edge of the base member against a top surface of the sealing member.

A filtration sealing system is provided for sealing a filter element in a housing at a mating interface therebetween. The sealing system includes a keyed interface. A replacement filter element is provided for such filtration sealing system, with the replacement filter element including a keyed interface.

One illustrative system disclosed herein includes an upper filter, a lower filter positioned vertically below the upper filter, at least one incoming air inlet positioned vertically above the upper filter, and a vacuum pump positioned vertically below the lower filter, the vacuum pump including an outlet, wherein an incoming air stream is adapted to flow downwardly through the at least one incoming air inlet, then through the upper filter, then through the lower filter and then out of the outlet of the vacuum pump where it exits as a cleaned air stream.

An air cleaner assembly is disclosed. In one aspect, the air cleaner assembly includes a housing defining an inlet and an outlet, and including an access opening between the inlet and outlet. The air cleaner also includes a filter cartridge received within the housing and covering the access opening. The air cleaner also includes a lock mechanism. The lock mechanism is movable between an unlocked position in which the filter cartridge can be installed and removed from the housing and a locked position in which the filter cartridge is secured within the housing. The filter cartridge and lock mechanism include interacting features allowing the lock mechanism to be moved from the unlocked position to the locked position only when the filter cartridge is installed within the housing.