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HOME  /  PRODUCTS   /  MECHANICAL SEALS  /  DUAL CARTRIDGE MECHANICAL SEALS  /  MECHANICAL SEAL STYLE  78

Dual Tandem Rotating Welded Metal Bellows Cartridge with
Pumping Ring

Mechanical Seal Style 78

 Dual Tandem Rotating Welded Metal Bellows Cartridge with Pumping Ring

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 Specialised Seals if in doubt.

Tandem Rotating Welded Bellows Cartridge

Mechanical Seal Style 76

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

 Dual Tandem Rotating Welded Metal Bellows Cartridge with Pumping Ring

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 Specialised Seals.

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 Specialised Seals if in doubt.

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