Diffusion phenomenon of mechanical seal (2)-

Diffusion phenomenon of mechanical seal (2)
　2017-02-21　　
The diffusion phenomenon of mechanical seals (2)
The relative content of the medium in the mechanical seal material determined according to the expansion kinematic curve. The leakage amount of the diffusion penetration of the sealing contact surface u0026 the contact area height can be introduced geometrically equal to the surface roughness. Therefore, the porosity and coefficient can be obtained by the mass leakage of the sealing contact surface diffusion and the volume leakage of the contact surface diffusion It is proportional to the periphery of the seal. Due to the small amount of diffusion leakage, it can generally be ignored. However, diffusion leakage cannot be ignored when sealing hydrogen, helium ion plasma and highly toxic and radioactive materials.
The mechanical seal quantification table has listed the seal class and unit leakage of various fluid seals. From the table, we can also see the qualitative evaluation criteria for visual leakage of various seals (sealing

Diffusion phenomenon of mechanical seal (1) 　　 Fluid sealing method of mechanical seal (1)