FILTER CARTRIDGE WITH END CAPS

摘要

A filter cartridge (16), which cartridge comprises a filter tube (50) composed of a plurality of nonwoven fibers bonded together with a bonding agent, the fibers at the peripheral edge at each end of the filter tube compressed axially together into a sealing relationship; end caps (24, 26) at each end of the filter tube, the end caps comprising a ring element (34) having an annular surface (44) extending across the entire edge width of the filter tube and placed in an axially compressive sealing engagement across the entire edge of the filter tube at each end; first and second annular flange elements (36, 42) extending from the ring element in a spaced-apart relationship, the first (36) and second (42) flange elements in a close relationship with the interior and exterior wall surfaces, respectively, of the filter tube; and a plurality of barb elements (38) extending laterally from one end of one of the flange elements (36) and directly into the wall surface of the filter tube (50), to retain the surface of the ring element in a sealing relationship with the ends of the filter tube (50).