Mechanical Seal Style RB1

World’s Only Split Cartridge Seal (US Patent No. 5662340)

Mechanical Seal Style 85


The Style 85 Split Cartridge Seal Reduces Downtime for Challenging and Time-Consuming Installations

  • The easiest installation of any split seal in the world: Simply attach 2 halves over the shaft and mount to the pump like any other cartridge seal.
  • Only split seal in the world in which just two pieces are handled: No handling of lapped faces as both are secured safely in cartridge halves. Faces can’t be cocked, chipped or scarred.
  • Only split seal in which impeller can be adjusted without removing the seal: Simply reinstall setting clips, release set screws and adjust impeller position then retighten set screws and remove the clips.
  • The only split seal fully assembled and pressure tested at the factory: We ensure the sealing integrity of each Style 85 before is sent to the field. This process gives your installation an even higher success rate.
  • No measurements, no shims, no special tools, no glue: Standard cartridge setting clips assures proper axial and radial alignment and makes installation even easier.


Operating Conditions

Seal Size Temp Speed Pressure
1 3/4“-3”
350ºF (175ºC) 3600 RPM 250 PSI
(17 bar)
3 1/8”-3 3/4”
350ºF (175ºC) 1800 RPM 200 PSI
(14 bar)
3 7/8”-4 3/4“
350ºF (175ºC) 1800 RPM 150 PSI
(10 bar)
(125mm) and above
350ºF (175ºC) 875 RPM 100 PSI
(7 bar)

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.



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