Features: Filters are designed for heavy-duty applications. The engine will run better than ever. Use the Aquabloc II electrostatic powder coated variant. No sludge or water is required. R12T, tank truck, tanker. Status: 100% Product Type: Consumable Filter Cover Material: Plate Galvanized, fingerprint resistant, not easy to rust. Ring Seal : High quality nitrile rubber Filter Fineness: 10 microns Flow Rate: 30 gallons/hour NOTE: Make sure you don't mind ordering later.