Types and uses of sealing materials-

Types and uses of sealing materials

　2017-01-04　　

Types and uses of sealing materials

The sealing material should meet the requirements of the sealing function. Due to the different media to be sealed and the different working conditions of the equipment, different adaptability of the sealing material is required. The requirements for sealing materials are generally: 1) The material has good compactness and is not easy to leak the medium; 2) It has appropriate mechanical strength and hardness; 3) The compressibility and resilience are good, and the permanent deformation is small; 4) It does not soften at high temperature and does not Decomposes, does not harden at low temperature, does not embrittlement; 5) Good corrosion resistance, can work for a long time in acid, alkali, oil and other media, its volume and hardness change little, and it does not adhere to the metal surface; 6) Friction The coefficient is small and the wear resistance is good; 7) It has the flexibility to combine with the sealing surface; 8) The aging resistance is good, and it is durable; 9) The processing and manufacturing are convenient, the price is cheap, and the material is easy to obtain. Rubber is the most commonly used sealing material. In addition to rubber, graphite, polytetrafluoroethylene, and various sealants are also suitable for sealing materials.　　223.html,

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