Seals are instructions for preventing fluid applications

The seal is a material or part that prevents fluid or solid particles from leaking from adjacent joint surfaces and prevents external impurities such as dust and moisture from invading the internal parts of the machine equipment. It is a major industry in the national economy such as chemical, petroleum, coal, and machinery manufacturing. Basic components and accessories.
Self-manufacturing of nuclear and petrochemical seals
In the refinery equipment, the dry gas sealing system is an important equipment for the heavy oil hydrogenation unit, which acts as an isolation and sealing function to prevent the unit gas and lubricating oil from collapsing.
Nuclear power main pump shaft seals are also imported from abroad for a long time. Some experts said that "the nuclear power main pump shaft seal is the last bastion of the localization of the million kilowatt nuclear reactor coolant pump."
China's nuclear power unit has made domestic breakthroughs with a number of seals, which means that China has taken a big step forward in solving the problem of localization and export of nuclear power equipment.
Although the seal is a small component of large equipment, it is only one of the many basic components of the unit, but it plays a vital role in the safety and stability of the entire unit.