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What is Nitrile Rubber (NBR)?
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Nitrile butadiene rubber (NBR) is a commonly used synthetic rubber elastomer, with applications across many different industries. Developed in Germany in the s, it is known for its strong resistance to oil, fuel, acids, and other chemicals, making it ideal for a range of automotive and aerospace applications. NBR is a copolymer made from two polymers: acrylonitrile and butadiene. Specific properties of NBR can vary based on its chemical composition. Higher amounts of acrylonitrile will lead to better oil resistance, but also decrease its flexibility. NBR has many applications across many industries due to its resistance to oil and chemicals, its wide temperature operating range, and abrasion and tear resistance.
Properties of Nitrile
NBR has many advantageous properties that make it a good choice for many different uses across many different industries. As with any material, there are also some downsides which may make it less than ideal for your specific application. Be sure you understand all of the advantages and disadvantages of NBR before choosing it for your specific project. Learn more about choosing the right rubber for your manufacturing needs.
Advantages
NBR has an unusually strong resistance to oil, gasoline, acids, aliphatic hydrocarbons, and other chemicals. It also has a wide temperature operating range of -40°C (-40°F) to 108°C (226°F). The combination of these two strong characteristics make nitrile the perfect choice for use in the automotive and aerospace industries. NBR also has strong water resistance, as well as good abrasion and tear resistance.
Disadvantages
No material is perfect, and NBR is no exception. Like any other elastomer, NBR has its disadvantages. When compared to natural rubber, NBR is not a strong or flexible material. Additionally, it has poor weathering resistance, and is not very resistant to sunlight, ozone or aromatic hydrocarbons. This means that it would not be an ideal choice for any outdoor applications.
NBR may still be the right choice for your specific needs. Its advantages still outweigh its disadvantages, and depending on the application, will still be a great choice of material. You&#;ll need to weigh all of the pros and cons when deciding what rubber to choose for your specifications.
Common Applications of Nitrile
Nitrile is one of the best synthetic rubber materials, and as such is used for many different purposes in many fields. It is used for seals, hosing, tubing, gaskets, grommets, adhesives, sealants, and more in a wide range of industries. Additional applications of NBR include:
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Automotive. Due to its strong resistance to oils and fuels, NBR is commonly used in oil hoses, seals, grommets, and more in the automotive industry.
Aerospace. Just as with the automotive industry, NBR&#;s fuel, oil, and chemical resistance makes it ideal for fuel and oil oses, seals, grommets, and fuel tanks.
Gloves. Disposable nitrile gloves are commonly used throughout the medical industry for examinations, as well as for cleaning. More heavy-duty, reusable gloves are also used for nuclear applications.
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Nitrile is high quality synthetic rubber and may be the right choice for your specific application. Get in touch with us today to see how we can help you make the right choice for your specifications.
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Category: Rubber moulding, Technical Features
Nitrile, Buna-N or NBR rubber is a widely used elastomer, thanks in large part to its highly oil & fuel resistant properties and tensile strength. In this article, Martin&#;s Rubber Company explains more about the properties, applications, pros and cons of this versatile rubber material. Nitrile rubber is a synthetic rubber copolymer of acrylonitrile (ACN) and butadiene that you may know better under trade names like Nipol, Krynac and Europrene N. Why might you consider specifying nitrile for your application? Let&#;s find out, with a closer inspection of this rubber material.
Nitrile (also known as NBR rubber and Buna-N) is the seal industry&#;s most widely used and economical elastomer. This is partly because it displays excellent resistance to petroleum-based oils, fuels, water, alcohols, silicone greases, hydraulic fluids. However, it also has a good balance of desirable working properties like low compression set, high abrasion resistance and high tensile strength.
Nitrile is a family of unsaturated copolymers of 2-propenenitrile and butadiene monomers (1,2-butadiene and 1,3-butadiene). Its physical and chemical properties vary depending on the polymer&#;s composition of nitrile. The more nitrile there is within the polymer, the higher its resistance to oils but the lower its flexibility. Nitrile rubber is more resistant than natural rubber to oils and acids, and has superior strength, but suffers from inferior flexibility.
Nitrile rubber is used in a wide variety of applications, such as O-rings, gaskets, oil seals, automotive transmission belts, hoses, V belts, synthetic leather, disposable non-latex gloves, printer&#;s form rollers and cable jacketing. NBR latex can also be used in the preparation of adhesives or as a pigment binder.
Nitrile offers the following advantages:
Speak to one of our advisers today to find out more about our nitrile rubber manufacturing capabilities. We can talk you through your options and give you honest and informed guidance to help you to specify the ideal product for your application. Speak to us today on 023 or [ protected]. For more information on why nitrile rubber is so popular for heat resistance, see our post: Why Buna N is so popular for use with hydrocarbons.
The post The pros and cons of nitrile rubber, NBR or Buna-N appeared first on Martin&#;s Rubber Company.
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