Mechanical Seal Style HPCSA

API Single Triple Ply Welded Metal Bellows Cartridge Mechanical Seal

For High Pressure Crude Oil Applications

Now there is a true high pressure bellows solution for one of the toughest oil and gas pipeline challenges: sealing crude oil under high pressures. Flexaseal brings its state-of-the-art, engineered edge welded metal bellows knowledge and capabilities to this demanding service.

Mechanical Seal Style HPCSA


  • API 682-compliant design is heavy-duty with a long sealing life and easy repairability.
  • Exclusive triple-ply welded bellows technology operates in pressures up to 1500 psig while accommodating significant axial movement.
  • All seal elastomers are static, eliminating dynamic O-ring wear and damage.
  • Choose from three (3) standard secondary bushing arrangements to accommodate Plans 65A and 66A.


Materials of Construction

Seal Faces: Sintered Silicon Carbide
Elastomers: FKM standard
Other materials upon request
Bellows: Inconel™ 718 Heat Treated
Metallurgy: 316 SS
Bushing: Bronze, Carbon

Operating Parameters in Crude Oil

Pressure: up to 1500 psig (103.4 bar)
Temperature: up to 180°F (82°C)
Speed: up to 3600 RPM
Shaft Sizes: up to 5.50” (139.7 mm)

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 HPCSA

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.