NBR Gasket

Offer High Resistance To Fuels, Oils, And Other Chemicals
NBR is one of the best material options for making gaskets that frequently come in contact with oils, fuels, and other chemicals, such as greases, acids, and solvents. NBR gasket gaskets offer much more resistance to fuels, oils, acids, grease, and other fluids than natural rubber gaskets and most other gaskets made from synthetic compounds, which is why they are often used in automotive applications and various other applications with nonstop oil exposure.

High Tensile Strength
NBR gasket has excellent tensile strength, boasting a PSI range of 200-3000 and a maximum elongation of about 600%. These capabilities mean this material is stretchable and does not lose shape and resists tearing. This is why gaskets made from NBR gasket are more durable than many other materials used for seals and other parts.

Excellent Resistance To Heat
NBR gasket can withstand temperatures ranging from -40 degrees Celsius (40 degrees Fahrenheit) up to 121 degree Celsius (250 degrees Fahrenheit). This temperature range makes NBR gasket an ideal base compound for applications that can operate in extreme temperatures and offer many other benefits. This is the reason that makes NBR gasket gaskets more suitable for applications under high temperatures.

Exceptional abrasion resistance
NBR gasket is resistant to abrasion, tears, and punctures, making it ideal for hydraulic hoses, gaskets, and any other parts that need to withstand repeated contact or regular abrasion. Therefore, NBR gasket gaskets are a good option for sealing gaps in various equipment parts that are subjected to regular abrasion.

Low permeability
NBR gasket has one of the lowest permeability rates among various synthetic elastomers, which means that gaskets made from NBR gasket seal well against many gases and liquids (including fuels, oil products, and hydrocarbons). These qualities make NBR gasket gaskets the most effective sealing solutions in many industries.

Nitrile or NBR is a synthetic rubber with good flexibility and resilience over a temperature range of -30 to +200 °F (-34 to +93 °C). It has good strength and abrasion resistance and a low compression set, all of which make it an effective gasket material. It's also available as FDA-approved white nitrile for food industry applications.
A particular strength of nitrile is its ability to withstand attack by oils and fuels. Many gasket materials swell and break down when exposed to lubricants, hydraulic fluids or gasoline, but not nitrile. As a result, it's used extensively with engines, generators, and fuel and hydraulic systems.
It does however have some weaknesses. It's not for high-temperature applications, it doesn't have good weather resistance and it will be attacked by polar solvents.

Know the application!
Every application is different, and there is no one gasket material that will successfully service all applications. Choosing the right material is critical for ensuring that a NBR gasket will not fail when placed into service and that it will continue to provide an effective seal over its expected life cycle. General application factors that should be considered when choosing a NBR gasket include the risks to be managed, whether the gasket will need to support continuous versus intermittent operation, whether the application constitutes standard or severe service, the equipment or joint being sealed, and the presence of any regulatory requirements.

Consider service temperature
Some elastomers lose strength at higher temperatures. When considering the temperature that a NBR gasket will be exposed to within an application, it is important to consider time as a key factor. What is really important is the length of time that the gasket will be exposed to the maximum temperature likely to be encountered. For this reason, the continuous maximum service temperature is a more relevant and useful parameter than just knowing the maximum temperature alone. As a general rule, as an application's temperature increases, the range of suitable gasket materials becomes more limited. More precisely, as an application's temperature approaches the maximum continuous operating temperature recommended for a given material, it will be necessary to consider an alternative material.

Consider service pressure
Pressures within an application can vary widely. Because gasket materials vary in their ability to support the pressures that may exist within an application, the maximum pressure to be serviced by a gasket must be known. As with temperature, as application pressures increase, the range of suitable materials will likely narrow. In addition, pressures may not be continuous within an application and the gasket material may be subject to pressure changes that result from process cycling. A competent gasket supplier will be able to offer guidance on the best material to choose given the range of service pressures that may exist within an application.

Media compatibility
Gasket materials also have varying resistance to the different fluids and gases with which they can come into contact within an application. Some media are relatively benign, while others, for example, are highly corrosive and may break down a gasket whose material is not able to withstand the aggressive chemical attack. It is therefore important to know the characteristics and properties of the media being sealed and to choose a gasket material that is fully compatible. Once again, competent suppliers will be able to provide guidance on the gasket materials that will best service the media present in your application.

Consider durometer and compression set
Durometer refers to how well a gasket material resists indentation. As a general rule, a NBR gasket should be soft enough to fill and seal the gap between two surfaces, but at the same time needs to be hard enough to resist loading forces and not be extruded out of the joint. Hardness of a gasket elastomer is typically measured by the Shore A scale. Gasket hardness is a relative term – what is hard enough for one application may be too soft for another, so care needs to be exercised in specifying the hardness desired.

Consider life cycle costs
Gaskets of different types and made from different materials naturally have different costs. However, the purchase cost of a gasket is only one component of the total costs incurred over the gasket's life cycle. Other costs, beyond the purchase cost, should be considered as relevant costs – including costs for installation, inspection and maintenance, downtime, and disposal. Because the purchase price is only one element in the total life cycle costs for a gasket, a gasket which is initially cheaper to buy, but which needs more frequent replacement than another, may actually be more expensive in the long run.

Work with a reputable NBR gasket supplier
Gasket fabrication requires experience, expertise, access to the best materials, and excellent manufacturing capabilities. Reputable suppliers have the knowledge and experience to help their customers choose the right gasket for their application. These suppliers fabricate their gaskets from quality materials, using proven manufacturing methods and techniques. They also carry a wide range of gasket materials, meaning that they can service most applications and ensure ready availability.

High Oil Resistance: One of the standout features of NBR gaskets is their excellent resistance to oils, especially petroleum-based oils. This makes them ideal for applications that involve contact with lubricants, fuels, and hydraulic fluids.

Good Temperature Range: NBR gaskets are capable of operating in a broad temperature range, typically from -40°C to 120°C. This makes them suitable for both low and high-temperature environments, providing flexibility for use in various industrial settings.

Wear and Abrasion Resistance: NBR is a tough material that offers high resistance to wear and abrasion, making it durable even in harsh operating conditions. This feature helps extend the service life of seals, reducing the need for frequent replacements.

Chemical Resistance: NBR gaskets are resistant to many chemicals, including oils, fuels, water, and some acids. This chemical resistance ensures that they maintain their integrity in aggressive environments, preventing seal degradation.

Low Compression Set: NBR gaskets maintain their elasticity over time, even after prolonged compression. This ensures they provide reliable sealing performance without significant deformation, even in applications requiring sustained pressure.

Cost-Effective Material: NBR is a relatively inexpensive material compared to other elastomers, making it a cost-effective solution for many sealing applications without compromising on performance.