NBR (nitrile) rubber: seals resistant to oil and fuel
NBR (nitrile butadiene rubber) is commonly known as nitrile rubber and stands out primarily for its resistance to oil, fuel and lubricant environments. In joints exposed to mineral oils, NBR is an indispensable material.
Characteristic properties of NBR
- High oil and fuel resistance — ideal for hydraulic and pneumatic systems;
- Good mechanical strength and wear resistance;
- Operating temperature approximately between -30 °C and +100 °C;
- Can be manufactured in various hardness (Shore A) grades.
Where is it applied?
- Seals for hydraulic cylinders and pumps;
- Seals and profiles for fuel and oil lines;
- O-rings and cuffs in the automotive and machine-building industry;
- Vibration-resistant elements in industrial equipment.
NBR or EPDM?
The choice depends on the environment: EPDM is superior where resistance to the open air, ozone and water is required, while NBR is the more correct choice for joints in contact with oil and fuel. The wrong material choice can cause the seal to fail prematurely.
For the NBR compound and seal geometry suited to your application, contact the NUR KAUÇUK MMC specialists.