Filter elements have a rubber seal formed around the inside and the outside of the filter element, which seals the top filter assembly to the bottom filter assembly. It is recommended to have to have a replacement filter element when running a See Through Filter Assembly in case the element is damaged during routine cleaning.
Below are some recommendations for micron to fuel/oil applications.
#28 Micron Filter Element works good when used for any fuels or transmission fluid.
#60 Micron Filter Element works good for engine oils up to 50 weight.
#115 Micron Filter Element used with screw on filters or 60 weight or heavier engine oils.
Racer can choose from drop down menu for element size and micron choices.