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Flange Seal Praedifa Series NRI, FlexiSeal®
Brand: PraedifaThe NRI product series features a FlexiSeal® design with a cantilever spring and is ideally suited for flange sealing in medium-pressure applications. It seals the pressure gradient from inside to outside. The NRI series is characterized by extremely high temperature resistance and chemical resistance.
Features• Wiper-type lips.
• Cantilever spring with high-load/high-compliance to resist permanent set and long-term flange separation.
• Rigid spring acts as a control band to resist low-temperature shrinkage.
• Available in large cross sections, ideal for large-diameter seals.
• NACE-approved energizers available for oil field use.
Specifications
Brand
Application Pressure Requirement
- Internal Pressure
Cushioning Mechanism
- No
Inside Diameter (mm)
- 108 to 1031
Length Unit of Measure
- mm
Maximum Surface Speed (m/sec)
- 0.005
Maximum Working Pressure (bar)
- 350
Maximum Working Temperature (°C)
- 80° to 230° C
Media
- Hydraulic
Minimum Working Temperature (°C)
- -200° to -190° C
Outside Diameter (mm)
- 126 to 1058
Polymer Family
- PTFE (Polytetrafluoroethylene), UHMW-PE (Ultra-High Molecular Weight Polyethylene)
Pressure Range (bar)
- High Pressure (< 500 bar)
Thermal Application (°C)
- Low Temperature (< -35° C)