Mechanical Seal ABRB3 (Big Bore)

Mechanical Seal ABRB3 (Big Bore)


  • Rotating design uses centrifugal force for self-cleaning
  • Uniform 360° transfer of torque to the rotating face
  • Welded metal bellows replace the dynamic elastomer which can hang up the seal faces
  • No springs to clog or break
  • No fretting
  • Only two (2) static elastomers – eliminate seal failures caused by dynamic O-ring “hang up” and offers cost savings when upgrading to Perfluorelastomers
  • Monolithic rotating seal ring made from a solid, homogenous material and is easily field-repairable



Rotating Seal Face: Carbon, Tungsten carbide, Sintered silicon carbide
Stationary Seal face: Sintered silicon carbide
Bellows: Hastelloy® C276
Metallurgy: 316 SS
Elastomers: Viton®, Ethylene propylene, Aflas®, Buna, Neoprene, Perfluorelastomer
Gland Gasket: Glass-filled Teflon™
Throttle Bushing: Glass-filled Teflon™

Operating Conditions

Temperature: 400°F (200°C)
Pressure: 300 PSI (20 Bar)
Speed: 4500 FPM

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 Flexaseal Engineered Seals and Systems, LLC if in doubt.


For more information on the ANSI Flex line

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