Uses and applications of hydrogenated nitrile (HNBR) in industry
A high-performance elastomer for demanding environments
Hydrogenated nitrile (HNBR) is a synthetic elastomer derived from nitrile rubber (NBR) through a hydrogenation process that significantly improves its thermal, mechanical and chemical properties. This material combines the flexibility of rubber with high resistance to heat, oils and chemicals, making it an ideal solution for demanding industrial applications, particularly in the automotive and energy sectors.
HNBR retains its characteristics even in extreme conditions where other elastomers lose effectiveness. Its ability to withstand continuous temperatures of up to 150 °C (and higher peaks) makes it one of the most stable materials among the technical rubbers used in industrial sealing.
Properties and advantages of HNBR
The key properties of hydrogenated nitrile include:
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High resistance to mineral oils, lubricants and hydraulic fluids.
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Excellent thermal stability and oxidation resistance.
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Very good resistance to abrasion, wear and fatigue.
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Lower gas permeability and high resistance to ozone and weathering.
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Good performance under high pressures and continuous load cycles.
These characteristics make HNBR a versatile, reliable material for manufacturing gaskets, seals and other components exposed to aggressive environments.
Industrial applications of hydrogenated nitrile
Automotive
HNBR is widely used in the automotive industry. It is found in suspension seals, mechanical seals, braking systems and expansion joints, where the combination of temperature, pressure and exposure to oils or fuels calls for high-performance materials.
HNBR gaskets offer excellent resistance to the fluids typical of the sector, such as oils, petrol and coolants, maintaining sealing and flexibility throughout their service life.
Energy and gas industry
HNBR is also used in gas and power generation plants, where reliable sealing is required against corrosive gases or variable temperatures. Its resistance to compression and deformation makes it a safe, durable option for pumping equipment, valves and connections.
Industrial engineering and technical sealing
Beyond the automotive sector, this material is used in hydraulic and pneumatic systems, compression equipment and process machinery. Thanks to its low permeability and chemical stability, HNBR ensures effective sealing even against aggressive fluids or hydrocarbon mixtures.
Custom HNBR gaskets and seals
At Manufactures Cusell, we manufacture HNBR gaskets and washers in different hardnesses and formulations, tailored to each customer’s operating conditions. As well as flat gaskets, we can supply HNBR O-rings and other specific technical formats to drawing or sample.
Conclusion
Hydrogenated nitrile (HNBR) is a high-performance elastomer that combines strength, durability and versatility. Its excellent behaviour with oils, fuels and high temperatures makes it an indispensable material for sectors such as automotive, energy and industrial machinery.
Its use in technical gaskets and seals ensures safety, sealing and reliability, even in the most demanding environments.
Request information or speak to our materials specialists to select the most suitable formulation for your application.
