Parker's Nitrile rubber (NBR) NM506-65  is an excellent general purpose material that has good mechanical properties when compared to other elastomers.  NBR is not resistant to weathering and ozone.

Certifications include AMS 7271

• Heat resistance — Up 82°C (180°F)
• Cold flexibility — down to -56°C( -70°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 hydraulic fluids
• Dilute 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, aromatic hydrocarbons (benzene), chlorinated hydrocarbons (trichloroethylene), strong acids, glycols, ozone, weather, atmospheric aging, and polar solvents (ketone, acetone, acetic acid, ethylene-ester)

*Custom sizes and coatings/markings are available upon request. Contact Parker O-Ring Division at 859-269-2351 for design and pricing assistance.