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What are the application characteristics classification of X-type sealing rings and the characteristics of V-type combined sealing rings?

Release time:

2019-05-08 12:30

Source:

X-ring sealWhat are the characteristics of the application characteristics classification and V-shaped combination seal ring?
 
X-ring seal application industry and characteristics
The X-ring seal is a four-lip seal with a cross-sectional shape similar to X. The range of applications for such seals is too wide. Suitable sealing materials for machinery or equipment can be selected according to temperature, pressure and medium. In order to adapt the X-ring as a sealing element to a given application, the mutual constraints between all operating parameters should be taken into account. The peak temperature, continuous operating temperature and operating period must be taken into account when determining the application specification. In the case of rotation, the temperature rise due to frictional heat must also be considered. After reading the application of the X-shaped sealing ring, let's take a look at the high-quality characteristics or characteristics of the X-shaped sealing ring.

Seal ring features:
1. Compared with the O-ring, due to the X-ring in the sealing lip between the formation of lubrication cavity, with a smaller friction resistance, starting resistance.
2. Because its flash is located in the recess of the section, the sealing effect is good.
3. Non-circular cross-section to avoid rolling during reciprocating motion.
 
Structural characteristics, classification and application of X-type rubber sealing ring
Star seal ring is one of the common seals in hydraulic machinery equipment, with a typical four-lip sealing structure, so it is also called X-ring (star ring). Dongsheng Seal tells you that a good sealing effect can be obtained by using a star-shaped sealing ring for hydraulic piston or hydraulic piston rod seal. Under low pressure conditions, it is necessary to rely on the deformation of the lip to produce a sealing effect. Secondly, because the contact surface of the lip is too low, the friction force is also too low. With the increase of pressure, the deformation of the elastic material of the sealing lip increases after pressure stretching, compression and bending, so that the radial pressing force of the rubber sealing ring automatically increases and the contact length with the sealing surface increases continuously until the entire axial length of the rubber sealing ring contacts the sealing surface, thus ensuring good sealing performance under high pressure.

1.Star rubber seal ringSuch seals are widely used, but generally mainly used in dynamic seals, such as sealing reciprocating motion of the piston, piston rod, plunger and seal swing, rotation or spiral motion of the shaft or mandrel. Static seals are generally used for radially stationary parts, such as sleeves, end caps, pipes, and axially stationary parts, such as flanges and covers. By selecting materials with different characteristics, it is possible to seal all liquids, gases and chemicals in time.

What are the characteristics of the design structure of the 2. star seal ring? X-ring can completely replace the use of O-ring, because of the flying round seal section, in the process can avoid the rolling phenomenon of hydraulic reciprocating motion, so that the seal performance and application to improve the sealing effect.

The working principle of the 3. star rubber seal ring? X-type rubber seal ring is a double-acting seal with its own elastic sealing ability. The sealing function is achieved by the superposition of the radial or axial contact stress and the system pressure generated by the pre-compression during the initial installation. The sealing force after superposition increases as the system pressure increases. Under pressure, the star seal ring, like a fluid with high surface tension, can transmit the pressure evenly to all surfaces.
 
V-shaped combination seal ringcharacteristics
The elastic sealing ring and the V-ring are fully applied to the pressure surface by means of the liquid working pressure, so that the working sealing lip is well expanded, and the sealing surface of the cylinder and the piston is compressed to achieve the purpose of sealing.
 
V type combination seal ring features:
1. The number of sealing rings can be selected according to the use pressure;
2. Allow certain eccentric load and eccentric movement;
3. During use, if the V-shaped combined sealing ring leaks, the sealing effect can be obtained by adjusting the pressing mechanism to press again;
4. When the packing cannot be loaded from the axial direction, it can be used with incisions, and the incisions are staggered at 90 degrees during installation;
5. The surface roughness value of the coupling surface is larger than the surface roughness value of the coupling surface of other seals;
6. Use under high pressure does not require anti-extrusion measures;

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