What is the function of sealing oil?
2 Answers
Sealing oil serves to prevent the leakage of hydrogen generated by the combustion in automobile engines, while also purifying the oil. The following is an introduction to automotive sealing oil: 1. Sealing oil system: The function of the sealing oil system is to supply oil to the sealing bearing and simultaneously separate hydrogen, air, and moisture from the oil, thereby purifying it. 2. Principle of sealing oil: A continuous flow of oil is injected between the high-speed rotating rotor and the stationary sealing bearing to form an oil film that seals the gas, preventing the internal hydrogen from leaking and external air from entering. To maintain this continuous oil film, the oil pressure must be higher than the hydrogen pressure.
Sealing oil is essentially the leak-stopping expert! In the engine cooling system, critical connection points like the water pump and thermostat are most prone to seepage. Applying specialized sealing oil allows it to penetrate metal gaps, hardening under high temperatures to form a sealing layer. Last time, a mechanic showed me a case where there was slight coolant seepage at the edge of a water pump. Instead of the hassle and high labor cost of disassembling and replacing the gasket, they simply cleaned the connection and applied sealing oil—done in half an hour, and it held up perfectly for two years. However, if the connection is severely deformed, you’ll still need the heavy-duty solution of replacing the entire assembly, as sealing oil is only a temporary fix. By the way, the newer solvent-free sealing oils are more eco-friendly and less volatile, making them a favorite in repair shops these days.
