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NBR

NBR stands for Nitrile Butadiene Rubber, a widely used synthetic rubber made by the copolymerization of Acrylonitrile (AN) and Butadiene (BD).
It is well known for its excellent resistance to petroleum-based oils, fuels, and many chemicals, which makes it ideal for industrial and automotive applications.
The acrylonitrile content determines its oil resistance—the higher the content, the better the resistance but with reduced flexibility at low temperatures.
NBR also has good mechanical strength and abrasion resistance, making it durable in demanding environments.
It can operate in a wide temperature range, typically from -40°C to 120°C, depending on formulation.
However, it is not very resistant to ozone, sunlight (UV), and weathering, which may require protective additives or coatings.
In the automotive industry, NBR is used for O-rings, seals, gaskets, and fuel hoses.
It is also used in oil-resistant conveyor belts, gloves for chemical handling, and various molded products.
NBR can be blended with other rubbers to adjust flexibility, hardness, and resistance properties for specific applications.
Because of its balance of cost-effectiveness, performance, and versatility, NBR remains one of the most important synthetic rubbers in modern manufacturing.

Grade Acrylonitrile
Content(%)		 Mooney ViscosityML1+4(100℃) Characteristics
Emulcril 1965 18~20 60~70 Excellent low temperature and flexibility properties, good processability
Emulcril 2850 27~29 45~55 Excellent balance of low temperature flexibility with oil resistance. Good processabilityand resilience.
Emulcril 2865 27~29 60~70 Excellent balance of low temperature flexibility with oil resistance. Good resilience.
Emulcril N41 28~30 72~82 Excellent green strength, high modulus and good abrasion resistance.
Emulcril 3340 33~35 35~45 Excellent balance of low temperature flexibility with oil resistance ,Good process ability.
Emulcril 3350 32~34 45~55 Excellent balance of low temperature flexibility with oil resistance. Good rebound, easy processing.
Emulcril 3358 33~35 54~60 Excellent balance of low temperature flexibility with oil resistance. Good resilience and stiffness ,easy processing.
Emulcril 3365 32~34 60~70 Excellent balance of low temperature flexibility with oil resistance water resistance.
Emulcril 3380 32~34 75~85 Excellent balance of low temperature flexibility with oil resistance. High tensile and modulus.
Emulcril 4050 40~42 45~55 Superior oil and fuel resistance, good processing properties
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