Double concentric cartridge seal

The Style-19 seal is a double concentric face seal designed for mixers and agitators or equipment where radial shaft movement is beyond accepted limits for typical face seals. The Style-19 will accommodate up to 1/8” (03.18MM) of radial shaft movement. Its concentric face design allows it to be mounted to equipment and requires no counterbore for mounting. Because of its stationary design, it will accommodate high speed. This seal requires a barrier or buffer fluid to be used between the inner and outer faces. The Style-19 is available in materials to suit most application requirements.

Features and Benefits

  • Can withstand .125" TIR
  • No stuffing box required
  • Fits a wide variety of equipment
  • Minimizes vibration and harmonic distortion
  • Easy installation
  • Services a wide variety of applications
  • Wide rotary face design
  • External seal
  • Compact axial length
  • Staionary design
  • Cartridge seal


  • Minimum Shaft Diameter:        1.000 in.   /     25.4 mm
  • Maximum Shaft Diameter:    5.000" in.     /   127 mm
  • Pressure:                To 300  psi    /     21 bar
  • Speed:                     4,000 fpm (20 m/s)
  • Temperature:            To 400° F     /    204° C
  • Spring Configuration:        Multiple stationary coil springs 


  • Metallurgy: 316SS
  • Set screws: Hastelloy C
  • Rotary face: Silicon carbide (SA) or tungsten carbide
  • Stationary face: chemical grade carbon or tungsten carbide
  • Springs: Hastelloy C
  • O-rings: Fluoroelastomer standard

*Hastelloy C is a registered trademark of Haynes International.


  • Chemical
  • Pulp and paper
  • Mining
  • Power generation
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