Why might gas lubrication reduce contamination in equipment that handles gases?

Gas lubrication helps reduce contamination in equipment that handles gases because it allows the system to use the process gas itself as the lubricant. By using the same gas that the equipment is already processing, you eliminate the need for external liquid lubricants, such as oils or greases, which could otherwise leak into the system and contaminate the product or the environment.1

This approach simplifies the overall apparatus and ensures that any leakage or interaction between the lubricant and the process environment does not introduce foreign substances. Like liquid-based fluid-film lubrication, gas lubrication functions by interposing a film that separates sliding surfaces, though it relies on the specific viscous properties of gases like air, steam, or industrial gases.12