The metal sealing ring is a kind of sealing element, which has the characteristics of being able to withstand high pressure and good sealing effect. The metal C-shaped sealing ring is a type of metal sealing ring, which can be closely attached to the sealing surface when compressed. The following editor will share with you what is the principle of the hollow metal sealing ring, and what is the metal c-shaped sealing ring.
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1. The principle of hollow metal sealing ring
1. Ordinary sealing ring with holes or openings.
2. Self-energizing (or system-energizing) sealing ring makes its internal pressure the same as the system pressure sealed by the sealing ring. An ordinary sealing ring filled with an inert gas (usually nitrogen) around 42 bar.
3. The sealing ring is pressurized, but the sealing ring is covered with a soft surface. The sealing effect of the hollow metal O-ring is caused by compressing the ring to a predetermined height equivalent to 20% to 25% of the cross-sectional compression. The rebound resilience provides some compensation for appearance roughness or appearance parallel errors. Can improve sealing. This covering layer can also be used to provide chemical resistance. But at the same time, the use of different tube wall thickness can further control the work performance.
4. Thin wall can be used for sealing ring requiring small flange load. This will limit the rated pressure of the seal ring to around 420BAR, depending on the cross-sectional diameter and the actual wall thickness. In addition, some metals are not suitable for thin-walled tube rings. In the same way, if the seal is at higher pressure, thick-walled pipe can be used as the ring, at the cost of a larger flange load. This can accommodate pressures much higher than 420 bar.
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2. What is a metal c-type sealing ring?
1. The type sealing ring is a new type of composite sealing element, and also a one-way sealing form with a metal cross-section structure. It forms the contact pressure between the strengthened sealing ring and the rigid body through the action of the internal pressure of the medium. The parts tell you that the new c-shaped sealing ring specification structure can solve the high temperature, high pressure, corrosion resistance and other sealing problems in the fluid sealing system. In, the system pressure strengthens the seal ring by providing additional compressive stress load.
2. The principle of the specification structure of the metal seal ring is the elastic deformation of the metal C-shaped structure. During the compression process, the seal ring and the sealing surface are tightly combined in a line sealing manner. The characteristics of the metal body determine the compressive load of the seal. This controlled compression matches the gasket pressure generated by the corresponding compressive stress. The gasket pressure is directly related to the sealing level.
3. Therefore, we need this compressive stress to make the gasket fill the flange. During use, this compressive stress will be supplemented from the system pressure. It is recommended that you use a softer sealing surface treatment to make the c-shaped sealing ring more plastic, and only need a smaller compressive stress to achieve the desired sealing level.
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