Heavy Duty Rotating Metal Bellows Double Cartridge Seal
API SEAL 78A
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.
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