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Flange Seal Praedifa Series NAI, FlexiSeal®
Brand: PraedifaThe 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)