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Single Stationary
Single Spring Cartridge Mechanical Seal with Circulation Gland

Mechanical Seal Style SS1

Strategic versatility

With common sleeves, glands, and seal parts for all designs, cartridge assembly is quick and fail-safe. Plus, it's easy to modify face material, metallurgy and elastomers. 

Single Cartridge Mechanical Seal


  • Part of Flexaseal’s integrated/platform single cartridge seal design

  • Patented (Patent Number US 7,979,986) Plunger-Lock drive

  • Stationary pusher design

  • Hydraulically balanced

  • Heavy-duty rugged design

  • No little springs to clog or fatigue, simply one beefy single spring located out of the product

  • Easy cartridge installation

  • Sleeve is isolated from product

  • Flush position maximizes face cooling

  • Shrouded rotary seal ring for maximum face protection and reliable start-up

  • Uniform 360° transfer of torque to primary rotating face

  • No pins to break or hang up

  • Easily upgradeable faces, metallurgies, and elastomers

  • Faces designed for optimum heat dissipation

  • Metric sizes available

SS3 with Circulation, Vent & Drain Gland

Stationary Single Spring Cartridges

  • All the benefits of the SS1 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 Conditions

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 Specialised Seals if in doubt.

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