Carboxylated Nitrile (XNBR) is a special type of nitrile
polymer that exhibits enhanced tear and abrasion resistance.
For this reason, XNBR based materials are often
specified for dynamic applications such as rod seals and rod
wipers.
Heat resistance
• Up to 100°C (212°F) with shorter life @ 121°C (250°F).

Cold flexibility
• Depending on individual compound, between -18°C
and -48°C (0°F and -55°F).
Chemical resistance
• Aliphatic hydrocarbons (propane, butane, petroleum
oil, mineral oil and grease, Diesel fuel, fuel oils)
vegetable and mineral oils and greases.
• HFA, HFB and HFC fluids.
• Many diluted acids, alkali and salt solutions at low
temperatures.
• Water (special compounds up to 100°C) (212°F).
Not compatible with:
• Fuels of high aromatic content (for flex fuels a special
compound must be used).
• Aromatic hydrocarbons (benzene).
• Chlorinated hydrocarbons (trichlorethylene).
• Polar solvents (ketone, acetone, acetic acid, ethyleneester).
• Strong acids.
• Brake fluid with glycol base.