Dynamic Lift Up-stream Pumping Face Technology | John Crane
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Transforming the traditional concept of sealing

Applying gas seal spiral groove technology to wet seals

Overcome the Toughest Applications to Boost Equipment Longevity
Tackle High Heat Generation, Low-Lubricity, and Intermittent Dry-Running Conditions

We answer operators’ toughest challenges, improving seal and pump reliability, preventing unplanned downtime and reducing operating costs across a broad range of process industries, including:

John Crane’s unique, engineered, non-contacting Dynamic Lift Up-stream Pumping face technology borrows from gas seal designs to deliver a breakthrough in liquid sealing technology. This allows operators to:

  • Improve mechanical seal life
  • Increase mean time between repair (MTBR)
  • Reduce seal leakage to atmosphere when compared to a pressurized dual seal
  • Allow a clean inboard face fluid interface, even with dirty product
  • Deliver a simple support system ensuring face lubrication without the cost of a pressurized barrier system 
  • Prevent solid build-up with slurries, scaling fluids or solids in suspension
  • Eliminate seal face flush to dissipate seal heat, reducing water usage
  • Address low water supply pressure challenges 
  • Reduce power consumption and heat generation due to non-contacting technology 

Dynamic Lift USP MTBR

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