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Flange Seal Praedifa Series NAI, FlexiSeal®

Brand: Praedifa

The NAI product series features a FlexiSeal® design with a helicoil spring and is ideally suited for flange sealing in high-pressure applications. It seals the pressure gradient from inside to outside. The NAI series is characterized by extremely high temperature resistance and chemical resistance.
Features
• Helical spring for high load and small deflection range.
• Resilient helical spring resists permanent set and maintains compliance to long-term flange separation.
• Many high-resilience energizer options available, including choice of light, medium and heavy loads and NACE for oil field use.
• Low-cost elastomeric energizers available, all with excellent fatigue resistance.

Specifications

Brand

Application Pressure Requirement

  • Internal Pressure

Cushioning Mechanism

  • No

Inside Diameter (mm)

  • 3.2 to 662

Length Unit of Measure

  • mm

Maximum Surface Speed (m/sec)

  • 0.005

Maximum Working Pressure (bar)

  • 550

Maximum Working Temperature (°C)

  • 80° to 230° C

Media

  • Hydraulic

Minimum Working Temperature (°C)

  • -200° to -190° C

Outside Diameter (mm)

  • 8 to 691

Polymer Family

  • PTFE (Polytetrafluorethylene), TFM (Modified Polytetrafluorethylene), UHMW-PE (Ultra-High Molecular Weight Polyethylene), TFM (Modified Polytetrafluorethylene)

Pressure Range (bar)

  • Extremely High Pressure (> 500 bar)

Thermal Application (°C)

  • Low Temperature (< -35° C)
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