How to choose the sealing ring according to the medium1

How to choose the sealing ring according to the medium

In daily use, we all know that different media use different sealing rings for mechanical seals for kettles, so how do we make choices? The medium is usually divided into four types: 1. Easy-to-vaporize medium, its requirement for the sealing ring is to require low friction coefficient and good thermal conductivity. Fluid causes seal faces to freeze. 2. High-viscosity medium, its requirement for the sealing ring is that the conflicting auxiliary material is wear-resistant, and the spring must have enough ability to overcome the resistance of the high-viscosity medium, so as to avoid the temperature of the sealing chamber being too low and causing the viscosity of the medium to increase, requiring the sealing chamber to keep warm or heated. 3. The medium containing solid particles is wear-resistant to the conflicting pair of the sealing ring, and must be able to exclude solid particles or avoid the deposition of solid particles. 4. Gas medium, it has low porosity to the graphite impregnated sealing ring of the sealing ring, and wear-resistant conflicting auxiliary materials; the sealing ring has good buoyancy, especially for the sealing of mixing equipment; when used for vacuum sealing, pay attention to the outside air Leakage, pay attention to the directionality of the seal. In practical application, we can choose the sealing ring according to the characteristics of the above medium.