The OTR Remanufactured Type AD-IP Oil Coalescing Air Dryer Cartridge is the perfect solution for compressed air equipment that operates in moist environments. This air dryer cartridge is designed to remove moisture and contaminants from compressed air, helping to prevent rust and corrosion. With this cartridge, you can be sure that your compressed air equipment is running at peak performance. FleetPride is your First Click in Heavy Duty®.