What kind of machine seal is the most difficult to manufacture? Do you know that?/You know what? Do you know that?/You know what?

1. It should be a dry gas seal, which has the highest technical requirements and the greatest manufacturing difficulty. 2. Non-contact dry gas seal, the groove on the sealing surface is the core technology. Just look at the price. You get what you pay. 3. Dry gas seal is difficult to manufacture and expensive. ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Thank you for your participation! What kind of machine seal is the most difficult to manufacture? Many people always think that it is a non-contact dry gas seal. However, I don't think so. ● Dry gas seal has the highest technical requirements and is also the most difficult to manufacture. Grooving the sealing surface is the core technology, and the key component of dry gas seal is the rotating ring. In order to meet the requirements of dynamic balance, the rotating ring of high-speed dry gas seal must have higher dimensional tolerance, shape tolerance and manufacturing accuracy than the rotating ring of ordinary mechanical seal, and its accuracy requirement is at most equivalent to that of ordinary bearings, but it can be guaranteed by ordinary processing equipment. Slotting the sealing surface is the core technology. Didn't you see that domestic and foreign manufacturers were "grabbing" the patents of related grooves a while ago? You registered the word "stone" and I registered another word "earth". What is the spiral of "Eight", "Man" and "Archimedes"? Why? To put it bluntly, any slot is ok, as long as the slot direction is not reversed. The original slotting methods were corrosion and electric spark, but now they are generally laser marking machines, which is not mysterious. The contact dry gas seal itself allows leakage, blocking the internal leakage of gas and the external leakage of buffer gas. Don't you think the non-contact dry gas seal is also a spring seal? The price is low, and you get what you pay for. Don't think there is a bubble, and there is a serious bubble? Like 48 yuan's PetroChina stock. Sorry, I'm busy. Let's stop here.