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English 
The Parker Prädifa nitrile-butadiene rubber N0552-90 is suitable for a wide range of applications.
Special Features:
• Good mechanical robustness
• Good resistance to gap extrusion
Chemical Resistance to:
• Air (oil-free)
• Compressed air (oily)
• Methanol
• Methyl-ethyl-ketone (MEK)
• Ethane
• Natural gas
• Petroleum (sulphur-free)
• Mineral oils (tests with NBR-1/ECI recommended prior to use with dynamic seals)
• Petroleum-based lubricating oils
• Lubricating oils SAE 10, 20, 30, 40, 50
• HFC (Water/polyglycol)
• HFAE (Oil in water emulsions; mineral oils / synthethic esters)
• HFAS (Mineral oil free, water-based synthethic fluids)
• PAO (Polyalphaolefines)
