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NBR - Nitrile O-rings are sealing rings made of Nitrile rubber (also known as NBR - Nitrile Butadiene Rubber). NBR material is renowned for its excellent oil resistance, making NBR O-rings widely used in automotive applications such as engines, transmissions, and fuel systems.
The key properties of NBR O-rings include their good resistance to oils, greases, and other petroleum derivatives, as well as their flexibility across a wide temperature range (from -30°C to 120°C). This makes them suitable for both low and moderate temperatures.
NBR - Nitrile O-rings also exhibit good mechanical properties, including high wear resistance and tensile strength, making them durable in use. They are also used in hydraulic systems, pneumatic applications, and industrial machinery due to their reliable sealing properties and cost-effectiveness. Overall, NBR Gaskets are versatile and widely applied in various industries for diverse sealing applications.
There are different variations of NBR - Nitrile O-Rings available with different Shore hardness and specifications for diverse applications:
NBR 55 Shore: This type of NBR has a Shore hardness of 55 and provides a soft and flexible sealing solution. It is suitable for applications where lower hardness is desired, such as seals in low-pressure and low-temperature systems.
NBR 60 Shore: With a Shore hardness of 60, this type of NBR offers slightly higher hardness than NBR 55 Shore but remains flexible. It is used in various sealing applications where a balance between flexibility and rigidity is needed.
NBR 70 Shore: NBR 70 Shore is one of the most common hardness grades and offers good overall properties. It resists oils, greases, and many chemicals, and is widely used in automotive, industrial, and hydraulic applications.
NBR 70 Shore FDA: This variant of NBR 70 Shore complies with FDA (Food and Drug Administration) regulations for use in food and beverage applications where safety and hygiene are essential.
NBR 80 Shore: With a higher Shore hardness of 80, this type of NBR provides improved abrasion resistance and stiffness, making it suitable for applications where a firmer seal is required.
NBR 90 Shore: NBR 90 Shore has the highest hardness in this list and offers excellent compression and wear resistance. It is used in critical sealing applications with high pressures and temperatures.
The choice of the right type of NBR - Nitrile O-rings depends on the specific requirements of the application, such as hardness, chemical resistance, temperature range, and regulatory compliance.
NBR O-rings offer several advantages that make them suitable for diverse sealing applications. A significant advantage is their excellent oil resistance, making NBR - Nitrile O-rings widely used in automotive applications such as engines, transmissions, and fuel systems.
Additionally, NBR O-rings have a wide temperature range, typically from -30°C to 120°C, making them suitable for both low and moderate temperatures. NBR - Nitrile O-rings exhibit good mechanical properties, including high wear resistance, tensile strength, and compression set, making them durable in use.
Moreover, NBR Gaskets are generally cost-effective and readily available in various sizes and shapes, making them a popular choice for various industrial and automotive sealing applications.
NBR - Nitrile O-rings find broad application in various industries due to their excellent properties. They are widely used in automotive applications, including engines, transmissions, and vehicle fuel systems, due to their good oil resistance and temperature resistance.
Additionally, NBR O-rings are used in hydraulic systems, pneumatic applications, and industrial machinery due to their reliable sealing properties and wear resistance. In the construction sector, NBR O-rings are used for sealing windows, doors, and other structural elements.
NBR - Nitrile O-rings also find application in HVAC (heating, ventilation, and air conditioning) systems, pumps, and valves due to their durability and cost-effectiveness.
Despite the many advantages, NBR - Nitrile O-rings have some disadvantages to consider. A significant drawback is that NBR Gaskets have limited resistance to certain chemicals, such as acids, alkalis, and solvents. Prolonged exposure to such aggressive chemicals can lead to deterioration of sealing properties and material degradation.
Additionally, NBR - Nitrile O-rings have a limited temperature range compared to some other rubber types, with a maximum continuous use temperature up to about 120°C. This may limit their applicability in higher temperature applications.
Finally, NBR O-rings can be susceptible to ozone and UV radiation, which can reduce the lifespan of the O-rings in outdoor applications. It is important to evaluate the compatibility of NBR O-rings with specific environmental factors before application. If you are seeking for O-rings with a great resistance to Ozone and UV radiation, click here to see our assortment of EPDM O-rings.
