Parker's 75 durometer black nitrile (NBR), NM304-75 is an excellent general purpose material that has good mechanical properties when compared to other elastomers. NBR is not resistant to weathering and ozone.
Temperature Range: -65°F to 250°F (-53°C to 121°C)
Certifications include Mil-P-25732
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 up to 212°F (100°C)
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.
