... Rotary Screw Air Compressor (37-300 kW / 50-400 hp)1.Ingersoll rand air compressor 2.smart,efficiency,oil free Oil Free Rotary Screw Air Compressor ( ... for critical sealing components, as well as for the high pressure rotor set. Combined with the use of the " ... result, UltraCoat was designed specifically for this oil-free compressor application, with its unmatched adhesion, durability, and temperature ...