In recent years, with the development of technology, mechanical seal technology has also been dramatically improved. Mechanical seal design approach can be classified as non-propelled and push, push O-ring type mechanical seals, mechanical seals, etc. wedge ring,non-propelled bellows-type mechanical seals, bellows type mechanical seals have metal bellows mechanical seals,PTFE bellows mechanical seals, rubber bellows mechanical seal, and so on.

　　Next we look at the metal bellows mechanical seal is a very broad application of dynamic sealing structure is sealed to seal an auxiliary device leakage resistance. Metal bellows mechanical seal floating good,easy accumulation of debris,from wear and tear, etc.,in the food,petrochemical and other industries play an important role.