Mechanical Seal Style SMS

Single Stationary Multi-Spring Cartridge with Circulation Gland

Mechanical Seal Style SMS


  • Part of Flexaseal’s integrated/platform single cartridge seal design
  • Patented (Patent Number US 7,979,986) Plunger-Lock drive
  • Industry’s leading economical single stationary cartridge design
  • Homogeneous monolithic seal ring
  • Drive mechanisms located out of product, minimizing corrosion and stress-related failure
  • Unique shrouded rotary for maximum face protection and reliable startup
  • Uniform 360 degree transfer of torque to rotating face
  • Seal faces positioned in gland for maximum protection
  • Dynamic elastomer moves on nonmetallic surface eliminating fretting
  • Faces designed for optimum heat dissipation
  • Sleeve is isolated from product
  • Hydraulically balanced
  • Easy cartridge installation
  • Flush position maximizes face cooling
  • Metric sizes available

SMS3 with Circulation, Vent & Drain Gland

  • All the benefits of the SMS design plus vent and drain gland with throttle bushing
  • Pipe connections are made to different sizes to assure that correct piping plans are employed
  • Cost-effective upgrade


Operating Parameters

Max Temp: 400°F (204°C)
Max Pressure: 300 PSI (20 bar)
Max Speed: 6000 FPM (30 m/sec)

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 SMS

Quote Request

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