Airtech ATOF-51820 Oil Filter Element for Rotary Screw Air Compressor

Airtech ATOF-51820 is a spin-on oil cartridge replacement filter for rotary screw air compressors. The part number ATOF-51820 identifies a replaceable oil filter element (cartridge) used to filter lubricating oil in Airtech rotary screw compressor lubrication circuits. This replacement cartridge is listed under Airtech ATOF-51820 by multiple distributors and OEM references, confirming its role as the dedicated oil filtration cartridge for Airtech systems. The spin-on cartridge design is documented in part catalogs and cross-reference listings as the compatible Airtech oil filter element for rotary screw compressors. Used during routine maintenance to replace the oil filter element and maintain oil cleanliness within the lubrication system.