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What are the characteristics and advantages of hydraulic cylinder sealing ring?

Release time:

2019-06-12 12:30

Source:

Hydraulic cylinderSealing ringWhat are the characteristics and advantages?
 
There are many sealing rings used in the hydraulic seal cylinder. Each sealing ring has its own characteristics and advantages. Let's take a look at the characteristics of the sealing ring and the sealing ring of the hydraulic seal cylinder.
 
What are the characteristics and advantages of 1. hydraulic cylinder sealing ring?
(1) The material of the hydraulic cylinder sealing ring shall be resistant to high pressure, and shall have mechanical strength under coordinated working conditions and bear high pressure of the system.
(2) The material of the hydraulic sealing ring should be wear-resistant and friction-resistant, that is, wear resistance. The design of the sealing ring specifications and models ensures that it works under better lubrication conditions.
(3) The hydraulic cylinder sealing ring needs to have a strong oil return capacity to ensure that the oil film brought out can be brought back to the inside of the system during the return trip to achieve dynamic balance and prevent the formation of back pressure.
(4) The pressure relief function of the hydraulic sealing ring, that is, the function of a one-way valve, prevents the occurrence of trapped oil conditions when the pressure of the mechanical system is low or reduced to zero.
 
2. the secondary seal, the secondary seal (ring gasket) shall have the following characteristics:
(1) its sealing low pressure sealing performance is good.
(2) The friction and wear are small when the seal is low.
(3) and can withstand the system high pressure for a short time, that is, when the back pressure is formed under severe working conditions, it can continue to operate reliably.
(4) At the same time to withstand low pressure or not to withstand pressure, the main function is to block the oil film passing through the main seal to achieve zero leakage.
What factors should be considered in the selection of rotating rubber seals?
 
O-ring is an automatic two-way sealing element, the installation of its radial and axial aspects of the pre-compression and O-ring itself initial sealing capacity, will increase with the increase of system pressure. Dongsheng seals tell you what factors need to be considered in the selection of rubber seals?
1. working conditions and working medium in the specific selection of sealing ring material, we must first consider its compatibility with the working medium. Secondly, it is necessary to comprehensively consider the working conditions such as pressure, temperature, working time and operation cycle of the sealing ring. If the rubber O-ring is used for rotary sealing, it is also necessary to consider the temperature rise caused by frictional heat. Different sealing ring materials have different physical properties, chemical properties and field application conditions.
 
The 2. sealing form is divided into static sealing and dynamic sealing according to the load type. According to the purpose, the hole seal, the shaft seal and the rotating shaft seal; According to the installation form, it is divided into radial and axial installation. These are the sealing ring design.
 
3. the detailed factors affecting the performance of the sealing ring 1, the hardness of the sealing ring material; 2, the size of the extrusion gap; 3, compression deformation; 4, pre-compression; 5, stretching and compression; 6, the installation of compression force.

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