Phốt Cơ Khí Styles 73P and 75P

Styles 73P and 75P

Giới thiệu: Styles 73P and 75P



Dual Cartridge Seals
Environmental protection

  • Flex-A-Seal is a respected leader in the design and manufacture of dual cartridge seals for critical toxic and fugitive emission applications where single seals are not acceptable. The simple idea of a second layer of protection provides the level of assurance that the world has come to expect.
  • The Style 73P / 75P is the latest new and improved version of the proven style 73 / 75 designs. These new seal designs incorporate many high performance features to help extend seal life.
  • First a unique integral bidirectional pumping system feature was incorporated.
    • This feature significantly improves the flow of the barrier fluid providing better heat dissipation which allows the seal faces to run cooler.
  • The second major improvement was changing the inboard rotary assembly to the Patent #7979986 Plunger-Lock drive.
    • The torque transmission strength is increased five-fold over traditional cup point set screws. Most importantly, it allows for quick/easy assembly and seal-kit replacement.
    • The entire drive mechanism is out of the product.
    • This system eliminates any possibility of sleeve distortion from over-tightened set screws.
    • There are no set screws to “back out”. The spring-loaded mechanism keeps the lug “trapped” in position.
  • The Style 73P offers all the advantages of a Stationary Welded Metal Bellows design on the inboard side.
    • Eliminates all dynamic elastomer problems caused by product and temperature incompatibility.
  • The Style 75P offers all the advantages of a Stationary Multi Spring Design.
    • All of the springs are isolated from the product.
  • The Style 73P / 75P is fully interchangeable. If the product or operating conditions change this dual cartridge seal can be easily converted from a pusher multi spring design to a welded metal bellows design or vice-versa.
  • Both dual seal designs are hydraulically balanced and can be operated in a pressurized or non-pressurized state.
  • Simple Cartridge Seal design for easy installation.
  • Shrouded face designs provides added protection and eliminates troublesome drive pins.
  • These designs fit pumps with standard and enlarged bores without modification.
  • Metric sizes are available.
  • A high performance dual mechanical seal like the Styles 73P / 75P may require a barrier fluid support system that maximizes the seal performance. Flex-A-Seal has a wide range of support system options to handle the simple to the most demanding service conditions.
  • A more economical SMD is also available for lighter duty services.

Operating Conditions

Max Temp - 400ºF (204ºC)
Consult Flex-A-Seal for higher temperatures

Max Pressure - 300 PSI (20 bar)

Differential Pressure

  • Style 73P: 15-25 PSIG
    *Higher pressure is available consult Flex-A-Seal.
  • Style 75P: 300 PSIG

Max Speed - 4500 FPM (22 m/sec)

Note: Maximum Temperature / pressure/ speed indicate operating extremes independently and does not imply the seal will function at these extremes at the same time. Contact Flex-A-Seal if you have any more questions.


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