Sealing Products Need to Improve Technical Level

With regard to the current level of Chinese seal technology, it is far from meeting the domestic demand for seals. It is a very pressing issue for the seal industry. The level of design and application of the sealing system depends on the ability of the sealed product to be developed and is mainly reflected in three aspects.

First, for the design of the static seal system, the seals of plant fibers and asbestos materials have been gradually eliminated, but the seals of chemical polymer materials have not been commonly used in some liquid static seal devices. The current domestic hydraulic rubber Seals, anaerobic rubber seals, can be used in the hydraulic mechanical seal system equipped with a relatively small number of domestic brands of seals, and process manufacturing quality and quality stability are very different from the imported seals.

2. For the shaft rotation dynamic sealing system, most of the market still use ordinary standard oil seals. When the shaft rotation dynamic sealing equipment has pressure design requirements, the domestic pressure resistant oil seal seals provide pressure levels of 1 to 3 Megapascals, while the imported seals can provide 10 MPa pressure level, at least 3 times more than domestic products, for the dynamic hydraulic pressure oil seal seal, has not yet been widely used in the mechanical shaft rotary seal system .

Third, for the reciprocating motion sealing system of hydraulic cylinders, the design of the main seal of the domestically-manufactured hydraulic machinery and the hydraulic cylinder dynamic seal system on the market is generally a U-shaped seal ring. In the design of the reciprocating dynamic seal system for hydraulic cylinders and hydraulic cylinders after the 1990s, the complex design of more complex U-rings and coaxial seals was used. The current internationally mature design consists of 5 combination rings, 4 combination rings, 3 combination rings, 2 combination rings, etc., which are applied to the piston cylinder with a supporting ring of a hydraulic cylinder, and the combined ring is used as a sealing assembly. Complicated, domestic design and manufacturing capabilities can not be produced in batches, and the quality level of the combination ring is still relatively poor.

China is also constantly introducing advanced science and technology and manufacturing techniques from abroad. The domestic industrial level of construction machinery has also made considerable progress. The advanced design level of hydraulic seals for engineering hydraulic machinery, working pressure resistance and working reliability of sealing systems Everything has been greatly improved. China's sealing industry has also made great progress. It has gradually changed the business model of low-power, high-energy-consumption small businesses. The combination of resources within the industry and the implementation of some large-scale sealing projects will make the industry an efficient and low-energy industry in the future. Consumption, high degree of intensification, and companies are becoming more and more large-scale. China's seal product quantity and quality level will gradually approach and reach the international advanced manufacturing level.