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What are the sealing mechanism and characteristics of V-shaped sealing ring?

Release time:

2020-03-27 15:38

Source:

Do you knowV-shaped sealing ringWhat is the sealing mechanism and characteristics?
 
In the free state of the V-shaped sealing ring, the outer diameter of the lip of the V-shaped sealing ring is larger than the inner diameter of the packing chamber, and the inner diameter of the lip is smaller than the outer shape of the piston rod. There is a certain deformation after assembly. Today, Xiao Bian will popularize science for everyone.What is the sealing mechanism and characteristics of V-shaped sealing ring.
         
Due to the role of the supporting seal ring, this deformation occurs only in the lip and generates pressure at its contact part. Even if no pressing force is applied, the lip can seal a certain internal pressure, because the lip has a "self-sealing" sealing ring.
 
Higher internal pressure can make the lip tip change the contact state and increase the contact stress, so that the lip and the rod fit more closely, and the medium is not difficult to pass. Even if the lip of the first V-shaped sealing ring is passed, the pressure will be reduced a lot, and then the pressure will be reduced again through the lip of the second V-shaped sealing ring. If this goes on, the internal pressure will be lost and finally the leakage will be prevented.
          
So, what is the characteristic of V-shaped sealing ring?
 
Good sealing performance. Allows a certain confidence load and confidence movement. It can be used in multiple laps, and a good sealing effect can be obtained by adjusting the pressing force. Resistant to shock pressure and vibration pressure. When the sealing ring packing cannot be loaded from the axial direction, it can be used with incisions. As long as the incisions are staggered during installation, the sealing effect will not be affected. Its disadvantage is that the friction resistance is larger than that of other molded fillers.
          
The number of sealed V-shaped sealing ring depends on the size of the sealing pressure, and the number of high pressure is generally used. The number of sealing rings increases, the friction resistance increases, and the lip wear is also large, so it is not advisable to increase the number of V-shaped sealing rings to improve the sealing performance. In use, the pressing force of the pressure ring should be adjusted frequently to keep the lip of the sealing ring in close contact with the surface of the cylinder or piston rod to prevent oil leakage.
 
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