Patent ID: 8474631

Claim:
A filter system for filtering fluids, the filter system comprising: a filter head; a filter cup with a rim area, wherein said filter cup is connected detachably by said rim area by a rotational and/or plug-in movement to said filter head; a filter element that is exchangeably arranged in said filter cup; a sealing device with several sealing areas, said sealing device sealing said filter head relative to said filter cup; wherein said filter element comprises a connecting end disk arranged at an end face of said filter element that is facing said rim area of said filter cup; wherein on said connecting end disk at least two of said sealing areas of said sealing device are arranged so as to extend circumferentially in such a way that a first one of said sealing areas seals said connecting end disk relative to said filter head and a second one of said sealing areas seals said connecting end disk relative to said filter cup; wherein said sealing device is arranged at a radially outer rim of said connecting end disk, said sealing device including said first seal area including a circumferentially extending first sealing groove arranged on said radially outer rim of said connecting end disk; wherein a first seal ring is arranged in said first sealing groove, said first seal ring sealing between said radially outer rim and said filter head; an axially inwardly extending hollow cylinder provided on an axially inwardly facing side of said connecting end disk and extending into said filter cup, said axially extending hollow cylinder spacing radially inwardly from said first seal ring; said second seal area including a circumferentially extending second sealing groove arranged on a radially outer circumferential surface of said axially extending hollow cylinder; wherein a second seal ring is arranged in said second sealing groove, said second seal ring sealing between said radially outer circumferential surface of said axially extending hollow cylinder and said filter cup.