Air filter component, filter cartridge and respirator

The invention relates to an air filter component, a filter cartridge and a respirator. The air filter component is made of a sheet material, the air filter component comprises a filter part, and the filter part comprises a first wave-shaped part and a second wave-shaped part; and a peripheral portion integrally formed with the filter portion to surround a substantially flat boundary of the filter portion. The first corrugated portion and the second corrugated portion are located on opposite sides of the peripheral portion, a maximum distance between the first corrugated portion and an upper surface of the peripheral portion is defined as a first distance, and a maximum distance between the second corrugated portion and a lower surface of the peripheral portion is defined as a second distance. A first sheet layer of the sheet is located on an outward facing side of the air filter component and a second sheet layer of the sheet is located on an inward facing side of the air filter component, a fiber diameter of