Elastomer vs. NBR

Attribute	Elastomer	NBR
Chemical Structure	General term for polymers with elastic properties	Acrylonitrile and butadiene copolymer
Common Uses	Tires, seals, gaskets, hoses	O-rings, seals, gaskets, hoses
Temperature Range	-70°C to 200°C	-30°C to 110°C
Chemical Resistance	Varies depending on specific elastomer	Good resistance to oils, fuels, and chemicals

Introduction

Elastomers and NBR (Nitrile Butadiene Rubber) are both types of synthetic rubber materials that are widely used in various industries for their unique properties. While they share some similarities, they also have distinct characteristics that make them suitable for different applications. In this article, we will compare the attributes of Elastomer and NBR to help you understand their differences and choose the right material for your specific needs.

Physical Properties

One of the key differences between Elastomer and NBR lies in their physical properties. Elastomers are known for their high elasticity and flexibility, making them ideal for applications that require stretchability and resilience. On the other hand, NBR is a type of synthetic rubber that offers excellent resistance to oil, fuel, and other chemicals, making it suitable for applications where exposure to harsh chemicals is a concern.

Temperature Resistance

When it comes to temperature resistance, Elastomers typically have a wider operating temperature range compared to NBR. Elastomers can withstand both high and low temperatures, making them suitable for applications that require performance in extreme temperature conditions. NBR, on the other hand, has a limited temperature range and may not perform well in very high or very low temperatures.

Chemical Resistance

Chemical resistance is another important factor to consider when choosing between Elastomer and NBR. Elastomers are generally resistant to a wide range of chemicals, making them suitable for applications where exposure to various chemicals is a concern. NBR, on the other hand, offers excellent resistance to oil, fuel, and other petroleum-based products, making it a popular choice for applications in the automotive and oil industries.

Mechanical Properties

When it comes to mechanical properties, Elastomers are known for their high tensile strength and tear resistance, making them suitable for applications that require durability and toughness. NBR, on the other hand, has good abrasion resistance and compression set properties, making it suitable for applications that require resistance to wear and deformation over time.

Applications

Both Elastomer and NBR have a wide range of applications across various industries. Elastomers are commonly used in the manufacturing of seals, gaskets, O-rings, and other components that require flexibility and resilience. NBR, on the other hand, is widely used in the automotive industry for making fuel hoses, oil seals, and gaskets due to its excellent resistance to oil and fuel.

Conclusion

In conclusion, Elastomer and NBR are both versatile synthetic rubber materials that offer unique properties for different applications. While Elastomers are known for their high elasticity and flexibility, NBR stands out for its excellent resistance to oil and chemicals. When choosing between Elastomer and NBR, it is important to consider factors such as temperature resistance, chemical resistance, and mechanical properties to determine which material is best suited for your specific needs.