(other designs upon request)

Nitrile-Butadiene-Rubber (NBR)

Nitrile rubber (NBR) is the general designation for the polymer mixture used. The acrylic nitrile portion varies for technical products from 18 to 50 % and effects the elastomer properties significantly.
The oil and fuel resistance improves with high acrylic-nitrile-contents, while simultaneously reducing the flexibility in cold temperatures, the elasticity, and the deterioration of the permanent set. NBR has good mechanical properties and a higher resistance to abrasion compared to other elastomers.

Chemical resistance:

• aliphatic hydrocarbon (propane, butane, gasoline, mineral oils, and fats, diesel fuel, heating oil)
  
• plant and animal fats and oils
  
• many diluted acids, bases, and saline solutions at low temperatures
  
• water
  

Not resistant to:

• fuels with a high aromatic contents (high-test gasoline)
  
• aromatic hydrocarbon (benzene)
  
• chlorinated hydrocarbons (trichlorethylene)
  
• polar solvents (ketone, acetone, ethyl acetate)
  
• strong acids
  
• brake fluid on glycol basis
  
• ozone, effects of the weather, aging