This replacement cartridge worked great in my vacuum. I often use a vacuum cleaner hooked up to a grinder, so I needed something I could flush from time to time to get rid of all the fine dust. Another shop vacuum burned out after using a paper filter that kept filling up with dust, and no shaking, hitting, etc. would eject enough dust. This has held up well after a few flushes during our projects this summer. I just let it air dry for a day or two before popping it back in the vacuum.