How to choose a suitable sealing ring for an oil cylinder?
2023/10/27
Understanding the characteristics of sealing is not too difficult, that is, reasonably avoiding leakage and environmental pollution. But how to reasonably ensure this under special working conditions is another matter.
To achieve successful sealing in hydraulic cylinders, it is necessary to balance the subtle correlations among various relevant elements, which jeopardize the actual sealing effect in dynamic applications. They include: wetting and mating surfaces, design elements such as appearance, raw materials and processing technology, as well as environmental factors such as working pressure, temperature, time, dynamic models, and installation.
The First Step to Success
Mastering the effectiveness of moisturizing is the first step towards achieving successful sealing in dynamic systems. A thoroughly moistened system will result in oil leakage, but in addition, it will reduce friction and thus relatively reduce seal damage. On the contrary, in systems lacking lubrication, the floating oil is reduced, but friction and damage are relatively increased.
Step 2 to Success
With the increase of liquid working pressure, the sealing characteristics tend to be sound. Because the working pressure of the sealing surface system decreases radially, the sealing element is pressed more closely into the pipe trench, promoting a better fit between the sealing element and the metal material surface of the pipe trench. If the seal design scheme is appropriate, with the increase of system working pressure, the sealing force and efficiency will also be improved.
Step 3 to Success
The extrusion resistance of the seal is the third primary condition. Seals in dynamic systems must be able to resist shear stress caused by the pressure difference between the working pressure side and the non working pressure side of the seal. Shear stress will push the seal into the gap between the metal material faces of adjacent pipe trenches, and the raw material and geometric appearance of the seal must be sufficient and firm to resist damage.
1、 Sealing rings for hydraulic cylinders
In light load applications, sealing components alone cannot guarantee zero leakage and long-term service life. Because the hydraulic cylinder of the hydraulic cylinder is immediately exposed to the external natural environment, it is particularly important to prevent leakage.
The solution is to connect the system in series. Each sealing element in the system has its own special function, and it is necessary to ensure that the mutual influence between each component can ultimately produce a high-performance sealing system
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