Air filter system, air filter element and method for exchanging an air filter element

An air filter system comprising:

• an air filter element including
• a filter media;
• an annular seal having a contact zone configured to form a friction grip to hold the filter element, the annular seal arranged on an axial end of the filter media including:
• a radially extending cross beam arranged directly on the axial end of the filter media;
• an axially outwardly extending elastic sealing web or foot formed on an axially outer side of the cross beam and extending axially outwardly away from the axial end of the filter media and cross beam;
• and
• a flat cylindrical sealing surface formed on a radially inner or outer side of the axially outwardly extending elastic sealing web or foot and spaced axially outwardly away from the radially extending cross beam;
• wherein the sealing surface of the annular seal is arranged axially outwardly away from the radially extending cross beam;
• a housing including
• a housing upper part;
• a clean air connection for discharging clean air from the housing;
• a sealing receptacle sealably engaging against and mounting the radial acting seal of the filter element in a form-fitting tight-fit connection, the sealing receptacle spaced away from the radially extending cross beam of the annular seal, the sealing receptacle formed on an interior wall of the housing;
• wherein the form-fitting connection mountably holds the air filter element to the housing;
• wherein the housing upper part includes
• the sealing receptacle having a cylindrical extending sealing surface extending from the upper housing part;
• wherein the cylindrical extending sealing surface encloses the clean air connection;
• wherein the cylindrical extending sealing surface receives the sealing surface of the annular seal of the air filter element;
• an annular projection arranged in the housing and protruding radially over the sealing surface of the sealing receptacle and arranged on and at the sealing surface of the sealing receptacle, the annular projection enclosed by the radial acting seal of the air filter element in a form-fitting manner;
• wherein the form-fitting tight-fit connection is provided by the radial projection engaging radially against and pressing radially into the contact zone, elastically compressing the annular seal to radially compress annular seal to form a friction grip by forming a radial groove into the annular seal when the filter element is installed in the housing, providing the form-fitting tight-fit connection mountably holding the air filter element to the housing, wherein the cylindrical extending sealing surface of the sealing receptacle is spaced axially away from the radially extending groove formed into the annular seal.