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                                         Information @ a Glance
  • A mechanical seal is a device which helps join systems or mechanisms together by preventing leakage, containing pressure, or excluding contamination.
  • Mechanical seals are devices to seal machines between rotating parts , and stationary parts . There are two types of mechanical seals: single mechanical seals, double mechanical seals.
  • The importance of seal design is widely understood in the process, aerospace, automotive and other industries.
  • A mechanical seal works though the use of two very flat lapped faces which make it difficult for leakage to occur.


  • A basic mechanical seal is not a complex device. It consists primarily of a rotary seal face, a stationary seal face , a tension assembly, and static sealing gasket and elastomers strategically located to complete the seal assembly.
  • The rotating and stationary sealing faces commonly referred to as primary seal members, are materials selected for their low coefficient of heat and are compatible with the fluid being pumped.
  • The boundary layer of fluid which is used and required to cool and lubricate the seal faces.
  • To prohibit leakage the mechanical seal assembly uses o-rings, v -rings, wedges and packing.


  • The Hi Fab Company manufactures mechanical seals to meet the OE and spare markets. The company has facilities for manufacture of quality mechanical seals.
  • The Leak proof Engg unit has manufacturing facilities and a R&D department to cater to the indigenous and export markets.
  • The Tungsten Carbide Sealing ring manufacturers have collaborations with world renowned manufacturers.
  • Most users indicate that Indian Mechanical Seals are having life comparable with that of international seals.
  • However, in some applications, such as very high pressure applications, users prefer imported seals because of better life.


  • Seal manufacturers must do their part by providing high security mechanical seals that comply with ISO/PAS 17712 and have been verified through tests performed by independent ISO/IEC 17025 testing facilities.
  • ISO/PAS 17712 provides a single source of information on mechanical seals that is acceptable for securing freight containers in international commerce.
  • The International Standard establishes uniform procedures for the classification, acceptance, and withdrawal of acceptance of mechanical freight container seals.

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