GN 7403.1 Stainless-Steel-Strainers are adapted for use as replacements for GN 7405 Depending on the mesh size, particles carried by liquid or gaseous media can be prevented from passing through. Units or housing interiors are thereby protected from foreign objects which can impair function or durability due to their size. The assembly space required is shown in the drawing. An additional O-ring is generally mounted at the circumference as a seal.