The 6″ Replacement 380 Micron Filter Element is used when running up to 70 weight engine oils. Filter Elements are made with very coarse 380 micron mesh which allows diesel soot to flow through with out sticking to the mesh and gumming up the element restricting flow. Still catches the visible particles which can be viewed and inspected. Filter elements can easily be cleaned with solvent or brake clean and reused. The filter elements have a Viton® rubber seal formed around the inside and the outside of the filter element. Should always carry an extra element when running a See Through Filter just in case it needs replacing. These Filter Elements fit Clear view 6” See Through Filters and other brands of 6” flat screen filters.