Air filter system

A main filter element for a filter system,

• said filter system comprising a tubular housing having an inlet arranged in the housing for introducing unfiltered air to be cleaned by filtration, an outlet arranged in the housing for discharging clean filtered air, an opening for changing the filter, a cover for closing the filter changing opening, and a filter arrangement comprising at least one prefilter, one main filter and one secondary filter arranged in axial succession between the inlet and the outlet such that air from the inlet must pass in a direction of flow through the filter arrangement to reach the outlet;
• wherein said main filter element is an annular filter element with a first end disk in the direction of flow which is closed and which carries an axially extending handle, and with a second end disk having a radially acting resilient gasket in a circumferential groove for sealingly contacting a radial sealing surface on a connecting element in the housing.

A secondary filter element for a filter system,

• said filter system comprising a tubular housing having an inlet arranged in the housing for introducing unfiltered air to be cleaned by filtration, an outlet arranged in the housing for discharging clean filtered air, an opening for changing the filter, a cover for closing the filter changing opening, and a filter arrangement comprising at least one prefilter, one main filter and one secondary filter arranged in axial succession between the inlet and the outlet such that air from the inlet must pass in a direction of flow through the filter arrangement to reach the outlet;
• wherein said secondary filter element is an annular filter element with a first end disk in the direction of flow which carries an axially extending handle and which has a resilient radial gasket in a circumferential groove for sealingly contacting a radial sealing surface on a connecting element in the housing, and with a second end disk which is closed.