Single cartridge seal, balanced design

The Style-20 seal is a single balanced cartridge seal that is (similar to the Style-19), capable of accommodating 1/8” (03.18MM) of radial shaft movement. The Style-20 is a stationary design and can operate at higher speed and pressures than many other alternatives. Because it is a single seal, the faces must be flooded while in service.

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 400  psi    /     28 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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