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HNBR (Hydrogenated Nitrile Butadiene Rubber) is a high-performance rubber material commonly used to make seals. HNBR rubber seals have many excellent properties and are suitable for a variety of harsh industrial applications.
Rubber brake diaphragm seal is essential for circuit breakers, controlling and regulating the braking system. Made of HNBR material, they have high chemical, heat, wear, and dimensional stability properties. Certification standards include ISO 9001, ISO/TS 16949, UL, and CSA. These seals ensure proper operation and safety, providing a stable working environment. They are also dust and moisture-proof, shock and shock absorption, and have good dimensional stability, making them suitable for various industries.
Chemical resistance: HNBR rubber seals have excellent chemical resistance and can resist the attack of a variety of chemicals, including acids, alkalis, solvents and oils. It shows better resistance to strong acid, strong alkali and high temperature environments. Compared with NBR rubber seals, HNBR rubber seals also have better resistance to polar solvents and fatty substances.
Heat resistance: HNBR rubber seals have high heat resistance and can maintain their physical and sealing properties in high temperature environments. It is typically able to withstand temperatures ranging from -40°C to +150°C, making it versatile in high temperature applications.
Wear resistance: HNBR rubber seals have good wear resistance and can be used in high friction environments for a long time without being easily worn. This makes it excellent in applications where resistance to wear and friction is required, such as dynamic sealing and rotary seal applications.
Oil resistance: HNBR rubber seals have good oil resistance to a variety of lubricants, fuels and industrial oils. Its ability to maintain its performance and sealing properties in contact with grease and petroleum products makes it widely used in applications involving lubrication systems and the petroleum industry.
Aging resistance: HNBR rubber seals have good antioxidant and anti-ozone properties and can resist oxidation and ozone erosion, so they have a long service life.
Environments and media that may not be suitable for HNBR rubber seals
High concentration of acids and alkalis: In environments with higher concentrations of acids and alkalis, HNBR rubber seals may be corroded and damaged. Especially strong acid and alkali media such as concentrated sulfuric acid, concentrated hydrofluoric acid and concentrated alkali solution.
High-temperature steam: In high-temperature steam environments, the performance of HNBR rubber seals may be affected. High temperature steam can cause degradation and failure of rubber materials.
High-temperature oxidants: Certain high-temperature oxidants (such as hydrogen peroxide, ozone, etc.) may cause damage to HNBR rubber seals. These oxidants can cause aging and damage to rubber materials.
Aromatic solvents: Certain aromatic solvents (such as benzene, toluene, etc.) may cause HNBR rubber seals to swell, soften or fail.
Chlorides and bromides: Chlorides and bromides may adversely affect HNBR rubber seals, causing corrosion and failure.
High tensile strength: HNBR rubber seals have good tensile strength and can withstand a certain amount of tension without breaking easily.
Excellent tear resistance: HNBR rubber seals have good tear resistance and can resist tearing and breakage.
Good resistance to compression deformation: HNBR rubber seals are able to maintain their shape and sealing performance when subjected to pressure.
Heat Resistance: HNBR rubber seals are able to maintain their physical properties in high temperature environments, typically withstanding temperatures ranging from -40°C to +150°C.
Low temperature resistance: HNBR rubber seals can still maintain elasticity and sealing performance in low temperature environments, and can usually withstand lower temperatures.
Excellent oil resistance: HNBR rubber seals have good oil resistance to a variety of lubricants, fuels and industrial oils.
Ozone resistance: HNBR rubber seals have good ozone resistance and can resist ozone erosion.
Chemical resistance: HNBR rubber seals maintain their performance and sealing properties under the action of chemicals such as acids, alkalis, solvents and oils.
Solvent resistance: HNBR rubber seals have good resistance to some solvents and can maintain their performance when exposed to solvents.
Good processability: HNBR rubber seals have good processability and are easy to be formed and processed into seals of different shapes.
It should be noted that specific performance parameters may vary depending on the formulation, manufacturing process and supplier of HNBR rubber seals.
Automotive industry: HNBR rubber seals are widely used in the automotive industry. They are often used as seals for critical components such as engine systems, transmission systems, braking systems, fuel systems and cooling systems. Because HNBR rubber seals are oil-, heat-, and chemical-resistant and can maintain sealing performance in harsh working environments, they are widely used in automotive engine seals, O-rings, gaskets, and sealing rings.
Industrial equipment: HNBR rubber seals are used in various industrial equipment. They are commonly used as seals in pneumatic and hydraulic systems, such as cylinder seals, piston seals, valve seals and pipe connection seals. The wear resistance and chemical resistance of HNBR rubber seals allow them to perform well in high pressure, high temperature and chemically corrosive environments.
Pressure vessels and pipelines: HNBR rubber seals are often used to seal and prevent leaks in pressure vessels and pipeline systems. They are able to withstand high pressures and temperatures, maintain sealing properties and ensure safe operation of the system.
Oil and Gas Industry: HNBR rubber seals have important applications in the oil and gas industry. They are commonly used in critical components such as oil well equipment, valves, pipe connections and seals. The oil and chemical resistance of HNBR rubber seals allows them to be used for extended periods of time in oil field environments and chemical exposure.
Medical equipment: HNBR rubber seals also have certain applications in medical equipment, such as medical devices, pharmaceutical packaging and liquid delivery systems. Its chemical resistance and reliable sealing properties make it suitable for the demanding requirements of the medical industry.
Appropriate HNBR rubber seals need to be selected based on the requirements and environmental characteristics of the specific application.
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