Breather Assy FLG 10 Micron a flange-mounted filler breather assembly designed to protect hydraulic tanks and other fluid containers by filtering out airborne contaminants, specifically those 10 micrometers (microns) or larger, allowing the tank to breathe without introducing particles that could damage the system. The assembly typically includes a flange for mounting, a cap with a built-in filter element, and often a strainer and gasket for a secure, sealed installation.