Chicago Pneumatic Sales supplies 100% Oil-free Reciprocating Air Compressor. Chicago Pneumatic Construction Equipment supplies industrial air compressors in the range of tank mounted air compressor, tank mounted air compressor with dryer and other series of air compressors, as well as a full range of 100% oil-free compressors. 100% Oil-free Reciprocating Air Compressor is provided with a built-in water/air cooling system. 100% Oil-free Reciprocating Air Compressor is suitable for PET industry. This air compressor is piston & rider ring designed for annual one time maintenance. It is available under PET series.