Mechanical Seal Style 78

Tandem Rotating Welded Metal Bellows Cartridge with Pumping Ring

Mechanical Seal Style 78

Features

  • Easy to install cartridge designs
  • Incorporated pumping ring improves the movement – and the cooling effect – of the barrier fluid during operation
  • A tangential connection maximizes the flow of barrier fluid
  • Can be operated in pressurized or non-pressurized configurations
  • Static O-rings throughout cartridge
  • Self-cleaning bellows action
  • Fits ANSI standard and big bore pumps
  • Metric sizes are available
  • Tandem design maintains product and barrier fluid on O.D. of both seals for increased safety and heat dissipation
  • Hydraulically balanced design
  • Double-ply bellows design available for higher pressure
  • Shrouded face design for added protection
  • Designs available include API 682 Type B low temperature and Type C high temperature as well as Tandem Arrangements 2 and 3

Specifications

Operating Conditions

Max Temp: 400°F (204°C)
Max Pressure: Inboard – 300 PSI (20 bar)
Outboard – 250 PSI (17 bar)
Max Speed: 4500 FPM (22 m/sec)

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time. Contact Flex-A-Seal if in doubt.

Downloads

For more information on style 78

Quotes

Quote Request

Depending on your specific needs and application, Flex-A-Seal can help you identify the ideal products. Contact us to tell us about your needs and request a quote.

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Mechanical Seal Style 76

Tandem Rotating Welded Bellows Cartridge

Style 76

Features

  • Cost effective version of Style 78, designed for applications in which pumping ring or tangential connection are not required

Specifications

Operating Conditions

Max Temp: 400°F (204°C)
Max Pressure: Inboard – 300 PSI (20 bar)
Outboard – 250 PSI (17 bar)
Differential Pressure – 15-25 PSIG recommended. Higher pressure is available consult Flex-A-Seal.
Max Speed: 4500 FPM (22 m/sec)

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time. Contact Flex-A-Seal if in doubt.

Downloads

For more information on the style 76

Quotes

Quote Request

Depending on your specific needs and application, Flex-A-Seal can help you identify the ideal products. Contact us to tell us about your needs and request a quote.

Request A Quote