How many types of auxiliary sealing rings are there for mechanical seals?
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The sealing between the rotating ring and the shaft (shaft sleeve), as well as between the stationary ring and the gland, is achieved through auxiliary sealing rings. They essentially belong to static seals; when the sealing surface and the axis centerline are not perpendicular, the moving ring seal experiences a slight axial movement, and the amount of this displacement depends on factors such as the perpendicularity error between the sealing surface and the axis center, the number of movements, and the shaft speed. There are many types of auxiliary sealing rings. Classified by material, they include synthetic rubber, polytetrafluoroethylene, and flexible graphite, etc.; classified by cross-sectional shape, they include circular, square, V-shaped, wedge-shaped, and covered sealing rings (Figure 29).
The auxiliary sealing rings of mechanical seals can generally be classified into several types based on material and cross-sectional shape, including: 1. By material: synthetic rubber, polytetrafluoroethylene, flexible graphite, etc. 2. Classified by cross-sectional shape: circular, square, V-shaped, wedge-shaped, and encircling sealing rings. .