Filter element used for filtering mineral oils in hydraulic systems comprises a filtering material and a supporting tube having a joint extending along the tube wall and formed by edges in the longitudinal direction

摘要

Filter element comprises a filtering material and a supporting tube (12) for supporting the material and made from a perforated sheet having a number of openings (18). The supporting tube has a joint (40) extending along the tube wall and formed by the edges (36, 38) in the longitudinal direction. Preferred Features: The joint extends only over a partial region of the periphery of the tube. The edges of the perforated sheet do not overlap in the region of the joint.