Coalescing Filter Element Filter Type Coalescing Particulate Filter Rating 1 micron Compatible Grainger Part Number 4HDT5 Compatible Manufacturer Part Number AO055JNFI Filter Efficiency 99.925 Percent For Fluid Type Compressed Air Nitrogen Gas For Substance Type Air Nitrogen Series OIL-X EVOLUTION Genuine Standards All Editions of ISO 8573-1 ISO 12500-1