Design Features & Benefits

Common Applications

  • Crude oil
  • Bitumen
  • Produced water
  • Boiler feed water
  • Amine
  • Ammonia
  • Seawater
  • Light hydrocarbons

Specifications

Materials of Construction

Rotary Faces: Silicon carbide, diamond coating
Stationary Faces: Proprietary FlexSiCG (siliconized carbon/graphite), diamond coating, carbon
Springs: Hastelloy C-276
Metal Parts: 316 stainless steel, Alloy 255, Hastelloy C-276
O. Rings: Fluoroelastomers, EPDM, TFEP, Perfluoroelastomers

Operating Parameters

Max Temp: 550°F (290°C)
Max Pressure: 2,000 psi (138 bar)
Max Speed: 12,000 FPM (61 m/s)
Max Barrier Pressure: 1,500 psi (103 bar)
Min Barrier Pressure Above Process: 30 psi (2 bar)

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 if in doubt.

Downloads

For more information on the HPPD

Quote Request

Depending on your specific needs and application, Flexaseal can help you identify the ideal products. Contact us to tell us about your needs and request a quote.

Type A | Category 2 & 3 Contacting Wet Seals – Arrangement 3

The Flexaseal Style HPPD provides superior design flexibility with highly adaptable features to meet specific application needs and comes standard with:

  • High duty seal face materials
    • Premier siliconized carbon/graphite, FlexSiCG, primary ring combines self-lubricating capabilities of carbon/graphite with the rigidity and wear resistance of silicon carbide.
    • Reaction bonded silicon carbide mating rings improve lubricity at the interface.
  • Laser-etched lubrication-enhancing features on the mating ring amplify film load support and reduce face-generated heat.
  • Robust seal rings with FEA-optimized geometry nearly eliminates seal face deformation.
  • Unique mating ring key-drive mechanism evenly distributes drive forces, reducing fracture potential.
  • Stationary design allows for high-peripheral speeds.
  • Metal-to-metal torque transfer to flexible stationary element eliminates wear-induced seal hang-up.
  • Metal oxide coated dynamic O-ring surfaces prevent wear from fretting and ensures smooth long-term operation.
  • Separate inboard and outboard mating rings improve safety over designs with a common mating ring by isolating inboard and outboard seals.
  • Expansive barrier fluid cavity for thermal management in high pressure applications.

Tailored Solutions with Customizable Features for Enhanced Reliability

  • Radial or axial pumping ring for barrier fluid circulation without an external pump