Patent ID: 7083661

Claim:
An air filter element used by closing both end surfaces of a hollow cylindrical filter portion by end plates, by forming an opening through which a fluid passes in the center of at least one end plate, and by fitting said opening on a cylindrical member, wherein said one end plate comprises a soft inner peripheral seal portion capable of sticking to the outer surface of said cylindrical member and a rigid closure portion which is disposed on the outer periphery side of said inner peripheral seal portion and in which the end surface of said filter portion is embedded, said end plate being of composite construction in which said inner peripheral seal portion and said closure portion are integrally molded, wherein on the outer periphery side of said inner peripheral seal portion, a groove axially extending from the end surface of said end plate is formed along said opening, said groove being located on the inside in the radial direction of the inner peripheral surface of said filter portion, and on the outer periphery side of said groove, said closure portion is formed; and the inside wall portion of said groove is formed by said inner peripheral seal portion, and the outside wall portion of said groove is formed by said rigid closure portion.