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Heavy Duty Rotating Metal Bellows Double Cartridge Seal


For High Temperature and Dirty Critical Services Where Leakage Must be Completely Contained

Introducing the Flexaseal Style 78A tandem cartridge seal, meticulously crafted for resilience and endurance, engineered to excel in high-temperature or contaminated environments where absolute containment of leakage and emissions is paramount. Its robust design features retained faces for both pressurised and unpressurised barrier systems, a rotating metal bellows for continuous self-cleaning, and a pilot gland ensuring precise centering of the seal.

Choose from our High Temperature (HT) configuration, equipped with static O-Rings or Grafoil Packing, enabling operation at temperatures reaching up to 800°F, enhancing reliability by eliminating the need for dynamic secondary sealing elements.

Tailored to meet your unique application demands, the Style 78A cartridge seal offers unparalleled customisation options. Plus, rest assured knowing that API 682 Compliant variants are readily available for seamless integration.

Heavy Duty Rotating Metal Bellows Double Cartridge Seal

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

  • Metric and ANSI Sizes 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

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