The respirator inflation pump, also known as the fire breathing air compressor or diving breathing air compressor, has many brands on the market, including imported and domestic products. However, their working principles are similar. We generally recommend using imported food grade lubricants, such as CE750 or 750-H2, which are purchased in bulk in large barrels and then packaged into 1-liter small bottles. The biggest feature is that the compressed gas has no odor, a flash point of 250 degrees, and is not prone to cylinder jamming. High pressure air compressors or breathing air compressors require specialized lubricating oil. Ordinary screw machine lubricating oil or piston machine lubricating oil cannot meet the flash point requirements. High pressure machines operating at high temperatures can lead to poor lubrication and cylinder biting after carbon deposition.