product details
Fluorocarbon FKM seal ring Nuclear power equipment Temperature resistance 320 degrees Irradiation resistance Acid and alkali resistance
Manager Yan of Shijiazhuang Jianyi New Material Technology Co., Ltd
As the core part of mechanical seal, the seal ring
The selection and installation determine the reliability and stability of mechanical seal, and the correct selection of seal ring must be considered according to different working conditions. Next, we will introduce the selection of sealing ring under different working conditions.
1. Selection under low temperature environment
For seals in low temperature environment, the elastic modulus of the material will decrease, resulting in deformation and leakage of the seal ring. Therefore, the sealing ring used in low temperature environment must choose the polymer material with low temperature performance. Generally, materials such as fluororubber, silicone rubber, butyl rubber and acrylate rubber can be used for sealing ring selection under low temperature environment. 2 Selection under high temperature environment
In high temperature environment, mechanical seals must withstand high pressure under high temperature, which may lead to material aging or thermal expansion, thus affecting sealing performance. Therefore, in high temperature environment, high temperature resistant sealing materials need to be selected. For example, seals suitable for high temperature conditions can be made of Viton
(FKM), silicone rubber (VMQ) and radon nitrile rubber (HNBR).
3. Selection of special media
When the medium of mechanical seal equipment is acid, alkali, oil resistant medium and other special media, it is necessary to select sealing materials with high corrosion resistance, oil resistance and chemical resistance, such as fluororubber, butyl rubber, etc.
4. Selection of high-speed rotating machinery
In high-speed rotating machinery, the seal ring must rotate rapidly and may be affected by high-speed inertia. In this case, it is necessary to select sealing materials with high strength and good wear resistance. For example, materials such as PTFE or activated graphite can be used for high-speed rotating machinery.
5. Selection of noise elimination
Under the noise environment, the sealing ring should have good sound attenuation performance. At this time, the sealing ring of soft material can be selected. Such as polyurethane, nitrile rubber, silicone rubber and other materials.
In conclusion, when selecting the seal ring, it is necessary to select the appropriate seal material according to the working conditions, so as to ensure the long-term stability and reliability of the mechanical seal.
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