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The wide variety of sealing materials increases the general adoption of the performance characteristics of the Y-shaped sealing ring. At the same time, the design of the sealing structure, through the skillful hands of Dongsheng designers, produces various types of seals to form the pursuit of the machinery and equipment industry. Select the correct sealing ring material according to the working equipment conditions of the hydraulic seal. The commonly used rubber materials for the hydraulic Y-shaped sealing ring include nitrile rubber (NBR) and fluorine rubber (FKM) with strong heat resistance and oil resistance; The polyurethane rubber material is selected for the requirements of abrasion resistance and pressure resistance.
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Oil seal for hydraulic cylinder bore
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fluororubber
The wide variety of sealing materials increases the general adoption of the performance characteristics of the Y-shaped sealing ring. At the same time, the design of the sealing structure is the pursuit of the machinery and equipment industry through the skillful hands of Dongsheng designers. Select the correct sealing ring material according to the working equipment conditions of the hydraulic seal. The commonly used rubber materials for the hydraulic Y-shaped sealing ring are nitrile rubber (NBR), and fluorine rubber (FKM) with strong heat resistance and oil resistance; The polyurethane rubber material is selected for the requirements of abrasion resistance and pressure resistance.
In addition to considering the performance advantages and price status of sealing materials, what basic conditions should be considered? (Sealing ring, Y-shaped sealing ring, Nitrile rubber (NBR), sealing ring material)
1. The working temperature of the Y-shaped sealing ring:
The applicable temperature ranges of rubber and plastic seals are quite different. When selecting materials, it is necessary to accurately grasp the working temperature of the seals, or control the temperature rise of components, systems and seals according to the working temperature range of the materials.
2. The structure of the sealing ring:
The structural type of the seal is not the same as the working principle of the seal, and it must have different requirements for the elasticity, strength, deformation rate and other mechanical properties of the material.
3. Type of working medium of Y-seal ring:
Whether the working medium of the Y-type seal is liquid or gas, if it is liquid, the compatibility of the liquid and the material should be considered; the compatibility of the material with the lubricant and grease should also be considered for the gas; the gas and negative pressure seal should also pay attention to the air permeability . Compatibility of the sealing material and the sealing fluid can cause the seal to expand or contract and fail. The expansion causes an increase in frictional resistance, which also causes the seal to roll.
4. Working pressure of Y-shaped seal:
The working pressure is the main working parameter of the hydraulic and pneumatic systems, which can be changed between 1 and 400MPa. The pressure resistance of the material should be considered whether the application environment can withstand it.
5. Dynamic seal or static seal:
The dynamic seal has corresponding requirements on the friction and wear properties of the material, and the material with the appropriate friction coefficient should be selected according to the movement speed. The service life depends on the speed of movement and the wear resistance of the selected material. When low speed is required, special attention should be paid to the size of the friction coefficient of the material and the difference between the dynamic and static friction coefficients.
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