Rubber Material Standard material NBR - Nitrile Rubber
NBR - Nitrile Rubber
Nitrile rubber, also known as NBR (nitrile butadiene rubber), is a unique elastomer. It is a synthetic polymer produced by the copolymerization of acrylonitrile and butadiene. Nitrile rubber is characterized by its excellent oil resistance, chemical resistance, and abrasion resistance. NBR grades with high acrylonitrile content have better oil and abrasion resistance, while grades with low acrylonitrile content have better low-temperature flexibility and resilience.
Nitrile rubber also has low gas permeability, especially those with high nitrile content, but poor ozone and moderate heat resistance. To improve the physical properties, nitrile rubber is sometimes carboxylated (XNBR) or hydrogenated, which improves their temperature resistance. Many properties can be adjusted by varying the acrylonitrile content in nitrile rubber.
Nitrile rubber's ability to resist oils, greases, and chemicals makes it a common choice in the oil and gas sector as well as the chemical industry. NBR is used to manufacture seals, gaskets, and O-rings that need to withstand aggressive chemicals and liquids. Its wear resistance and flexibility also make it a good option for use in pneumatic and hydraulic systems.
NBR is also used in the healthcare sector in the form of medical gloves and other protective clothing. Since nitrile rubber has good resistance to blood, chemicals, and bodily fluids, it helps maintain hygiene and provides protection for both healthcare professionals and patients.
Characteristics
NBR - Nitrile Rubber
Nitrile rubber is mainly used when oil and fuel resistance is required.
For even better properties in the field than what NBR can offer, the gaze is often turned towards its sibling HNBR - hydrogenated nitrile rubber.
- Maximum temperature: 90°C
- Minimum temperature: -30°C
- Tensile strength: 3
- Compression set at -30 to +70°C: 3
- Compression set at +70 to +150°C: 3
- Abrasion resistance: 3
- Oil and gas resistance: 3-4
- Weather and ozone resistance: 1-2
- Heat aging: 3
- Adhesion to metal: 4
- Adhesion to textiles: 3-4
Rating scale for table
5 - Excellent / 4 - Very good / 3 - Good / 2 - Fair / 1 - Poor
NBR Rubber Products - Nitrile Rubber
Nitrile rubber is used where excellent oil resistance is required, such as in sealing applications. Below are some typical examples of products made from nitrile rubber:
Seals and gaskets: Nitrile rubber is used for the manufacture of seals, O-rings, and gaskets where there are requirements for chemical resistance and elasticity to ensure a sealing and protective function in, for example, piping systems, engines, and fluid systems.
Hoses and pipes: Nitrile rubber is used in the manufacture of flexible hoses and pipes used for the transport of oils, fuels, and chemicals.
Gloves and protective equipment: Nitrile rubber is used for the manufacture of protective gloves in the healthcare sector, laboratories, the food industry, and the chemical industry. Nitrile gloves provide good protection against chemicals, oils, and infectious agents, while also allowing the user to handle their tools and instruments effectively.
Industrial coatings and insulation: Nitrile rubber is used for the manufacturing of industrial coatings and insulation materials with high demands on wear resistance and durable surfaces that can withstand oils and chemicals. NBR coatings are used in industries such as the automotive industry, machine manufacturing, and the construction sector.
Sports and leisure products:Nitrile rubber is used in the manufacturing of sports and leisure products such as diving equipment, life jackets, and rubber mats. Its waterproof and wear-resistant properties make it a popular choice for products used in marine environments.