Abstract: The invention relates to a filter cartridge (1) which comprises a firmly fixed lid (10) and has a long service life. Said lid (10) is embodied in such a way that the bottom (11) of the lid extends towards the peripheral wall (3) of the cartridge container to join the lateral wall (16) of the lid, by means of an inwardly curved edge section (14), the curved edge section (14) and the lateral wall (16) in the form of a strip joining in the forming region to form an inwardly tapered common wall section (15). In this way, the region fixing the lateral wall (16) to the peripheral wall (3) is subjected only to a tensile load, minimizing the risk of shear fracture, and the inner pressure in the region of the common wall section (15) presses the wall section against the peripheral wall (3), thus exerting an additional sealing force.

Abstract: The invention relates to a filter cartridge (1) which comprises a firmly fixed lid (10) and has a long service life. Said lid (10) is embodied in such a way that the bottom (11) of the lid extends towards the peripheral wall (3) of the cartridge container to join the lateral wall (16) of the lid, by means of an inwardly curved edge section (14), the curved edge section (14) and the lateral wall (16) in the form of a strip joining in the forming region to form an inwardly tapered common wall section (15). In this way, the region fixing the lateral wall (16) to the peripheral wall (3) is subjected only to a tensile load, minimising the risk of shear fracture, and the inner pressure in the region of the common wall section (15) presses the wall section against the peripheral wall (3), thus exerting an additional sealing force.

Abstract: A filtration device for liquids is provided and includes a filtration beaker filled with a filtration material and a lid. The lid is connected to the filtration beaker in a liquid-tight manner to define an inner volume, and includes at least one liquid inlet and at least one air vent. A sieve-like textile fabric is disposed in between the filtration beaker and the lid. In order to guarantee secure operation and ensure a good retaining effect with respect to particles having a size of approximately 200 micrometers at different filtration-material fill heights in the filtration beaker, the sieve-like textile fabric has at least one formed part protruding into the inner volume of the lid, whereby air can be found on both sides of the part of the textile fabric which is located farthest away from the filtration beaker.