Sealing system design and application level of development relies on sealing products, mainly in three aspects.
(1) rotation move sealing systems
The present is still common standard oil pressure requirements for rotating sealing device for l can offer 3MPa - the voltage type, and pressure seal the international advanced level as 10MPa. Fixed hydraulic oil in the application of backflow of engineering machinery rotating seal device has gained popularity.
(2) hydraulic cylinder reciprocating dynamic sealing systems
Most current domestic construction machinery hydraulic cylinder dynamic seals system design still use u-shaped seals for sealing. The middle 1990's, design and production of mechanical engineering, hydraulic cylinders moving sealing system adopted coaxial seal components and the u-shaped sealing compound design. The most widely used in international 5 components (or three components of hydraulic cylinder piston belt) support ring seal components, the combination of production process is relatively complex, home stay small batch production stage, quality stability.
(3) static sealing system static sealing systems, although cancelled asbestos and plant fiber seal products, but macromolecule material liquid gasket use is not popular. At present domestic use of these products are produced by company of seal products. Domestic liquid sealant and used in hydraulic system of piping connections of anaerobic adhesive products and brands coated process and quality performance are certain disparity.

Prospect: Chinese seal in the scientific medical manufacturing industry will face seals by engineering and other armed ji, high-pressure hydraulic machinery industry of serious topic.
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