Mechanical seal on the pump shaft

Compare mechanical seals and packing , mechanical seal has reliable sealing , long life, low power consumption , the use of a wide range of advantages. Part of the early failure of the mechanical waterproof labels life is short, the main problem is the lack of design and manufacturing , often due to improper selection , spare parts of inferior quality , reasonable friction material selection , installation and maintenance shall not be law , sealing causes poor water quality . To extend the life of mechanical seals , need to design , manufacture, maintenance and use of all aspects of work together.
Mechanical seal design and modeling must be combined with the actual production situation , try to use reliable sealing, long-lived static friction materials and seal material . If double mechanical seal contacts the inner end of the media , in order to use corrosion resistant materials based ; does not contact the outer end of the media , in order to choose a good sealing reliability based materials , such as WC rubber rings , etc., are not necessarily consistent pursuit of inner and outer ends selection , both to reduce costs , but also increase the sealing reliability.
Mechanical seal parts machining quality must be strict requirements, specifications and maintenance procedures must be particularly set mechanical seal installation and use of technical requirements, so that rule-based workers .
Mechanical seal during use , is not necessarily a little on the high amount of leakage must overhaul. Sometimes after a period of time to run into the sealing surface of the dirt washed away , sealing water clean, running- friction , the temperature deformation eliminated, leakage will be significantly decreased. For double mechanical seal ,plastic seals  as long as they secure pressure , they can test for a period longer overhaul.