Basic requirements for mechanical hydraulic seals

Hydraulic machinery sealing material (material), the basic requirements is reflected in the material (material) properties. Sealing materials of different will directly affect the sealing pieces of work environment such as the use of temperature, pressure, medium conditions and operating mode.

1.Hydraulic seal has a certain mechanical properties, such as tensile strength, elongation at break due to the installation of the large deflection of the seal, so that the force between the sealing surface is not uniform, will lead to poor sealing effect.

2.The hydraulic seal is flexible and the hardness is suitable, the compression is permanent and the deformation rate i s small.

3.Hydraulic seals have resistance to high temperature and low temperature, high temperature decomposition, softening, non hardening at low temperature; under the high temperature environment of mechanical hydraulic seals, when the temperature exceeds 200 degrees when it was considering the influence of thermal changes, to seal the thermal stability, in the same structure sealing thermal expansion coefficient is approximately equal to and molded by stamping and welding of metal corrugated pipe structure.

4.Adaptability and working medium, does not produce swelling, decomposition, hardening and other adverse reactions is small; in the design process to fully take into account the mechanical parts and the use effect of the equipment on the spot, for the mechanical seal and create a good hydraulic seals.

5.The hydraulic seal is better than the performance of oxygen resistance and aging resistance is also better, the best durable, long life

6.Hydraulic seal wear resistance, also do not wear metal Oh; note that selection of sealing ring surface should be smooth; no wrinkles, no cracks, no stomata, no scratch. Selection of sliding surface rough degree appropriate hydraulic seals, try to avoid Kepeng, scratch, do a good job in management the cleanliness of hydraulic oil.

7.Easy molding and secondary processing, and must is the high price of the products. We are not only to the hydraulic seal pieces shape design requirements, should have a basic understanding of seals used in the sealing material (material) to, what kind of rubber sealing material medium conditions characteristic of seals should be used in what type of seal is the most suitable and so on.

The solution can be designed, manufactured and used in several ways.