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Flange Seal Praedifa Series NHI, FlexiSeal®
Brand: PraedifaThe NHI product series features a FlexiSeal® design with a helicoil spring and is ideally suited for flange sealing in extreme high-pressure applications. It seals the pressure gradient from inside to outside. The NHI series is characterized by extremely high temperature resistance and chemical resistance.
Features• Extended heel reduces the effects of extrusion.
• Helical spring for high load and small deflection range.
• Resilient helical spring resists permanent set and maintains compliance to long-term flange.
• 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)
- 5.9 to 768.4
Length Unit of Measure
- mm
Maximum Surface Speed (m/sec)
- 0.005
Maximum Working Pressure (bar)
- 1400
Maximum Working Temperature (°C)
- 230° C
Media
- Hydraulic
Minimum Working Temperature (°C)
- -190° C
Outside Diameter (mm)
- 12.5 to 800
Polymer Family
- PTFE (Polytetrafluorethylene), TFM (Modified Polytetrafluorethylene)
Pressure Range (bar)
- Extremely High Pressure (> 500 bar)
Thermal Application (°C)
- Expanded Low & High Temperature (< -35° to 140° C)