Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of hydrogenated nitrile o rings in China, also supports customized service. Please feel free to buy high quality hydrogenated nitrile o rings for sale here from our factory.
Product Descriptio
Sealing rings made from hydrogenated nitrile (HNBR) are called hydrogenated nitrile O-rings. Nitrile rubber (NBR) is hydrogenated to form a unique rubber substance called HNBR. This material is often used to make static or dynamic sealing O-rings in industrial and automotive applications.
Technical Data
| Property | Unit | Test Method | Test Parameter | Value |
| Hardness | Shore A | ASTM D 2240 | 90±5 | |
| Tensile Strength | MPa | ASTM D 412 | 18.2 | |
| Ultimate Elongation | % | ASTM D 412 | 109 | |
| Specific Gravity | g/cm³ | ASTM D 297 | 1.57 | |
| Compression Set | % | ASTM D 395 B/1 | 24h / 150°C | 16 |
| Compression Set | % | ASTM D 395 B/1 | 70h / 125°C | 23 |
| Compression Set | % | ASTM D 395 B/1 | 70h / 150°C | 35 |
| low temp. DSC glass transition |
°C | DIN 53545 | DSC glass transition |
-39 |
| low temp. TR10 | °C | ASTM D 1329 | TR10 | -35 |
| low temp. brittle point | °C | ASTM D 2137 A | brittle point | -47 |
Advantage and Function
- Heat resistance: Hydrogenated nitrile O-rings are generally able to withstand temperatures between 150°C and 170°C and can function effectively in high temperature situations.
- Oil resistance: Hydrogenated nitrile seals can withstand a variety of liquid media, fuels, and lubricants, so they are widely used in applications such as fuel, lubrication, and hydraulic systems.
- Chemical resistance: Hydrogenated nitrile seals can work in certain corrosive conditions without corrosion and have good resistance to various chemicals. Therefore, they are often used in chemical processing systems, pharmaceutical equipment, and chemical equipment.
- Excellent dimensional stability: Hydrogenated nitrile O-rings do not expand or shrink and maintain good dimensional stability under various pressure and temperature conditions.
- Oxidation resistance: Hydrogenated nitrile seals resist corrosion from oxygen, ozone, and other oxidants. This improves system reliability and extends seal life.
- High tensile strength and wear resistance: Hydrogenated nitrile seals provide reliable performance in dynamic sealing applications due to their high tensile strength and wear resistance.
Application
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vehicle industry: The industries of vehicle manufacture and repair frequently employ hydrogenated nitrile o rings. These are employed for sealing important parts including gasoline, air conditioning, brake, engine, and transmission systems.
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Oil and gas industry: hydrogenated nitrile sealing rings are crucial to the extraction, processing, and transportation of oil and gas. In order to guarantee system dependability and safety, they are used to sealing pipelines, valves, pressure vessels, and other equipment.
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Chemical industry: hydrogenated nitrile o rings are extensively used in chemical processing equipment, storage tanks, reactors, and piping systems to prevent liquid or gas leakage because of their exceptional resistance to chemical compounds.
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Medical equipment: To ensure dependable and safe operation, hydrogenated nitrile sealing rings are extensively employed in medical equipment, including seals in blood analysis equipment, infusion pumps, and respirators.
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Aerospace industry: To seal important parts including aircraft engines, aviation fuel systems, and hydraulic systems, hydrogenated nitrile O rings are utilized.
FAQ
Q: What is the distinction between hydrogenated nitrile o rings and other sealing materials?
A: HNBR O-type sealing rings offer various distinguishing qualities when compared to other sealing materials. HNBR is more resistant to heat and oil than standard NBR (nitrile butadiene rubber). It can sustain greater working temperatures and performs better in liquid media including lubricants, fuels, and chemicals.
Q: Can the HNBR O-ring seal resist a chemical attack?
A: HNBR seals are highly resistant to a variety of substances, including acids, bases, and solvents. They typically have strong chemical stability and can function in several harsh conditions without harm. However, particular chemical resistance might vary based on the seal's composition and concentration, thus testing and validation in specific applications is needed.
Q: What is the service life of an hydrogenated nitrile o rings?
A: HNBR O-rings typically have a longer lifespan and durability. Its qualities, including heat resistance, oil resistance, oxidation resistance, and high strength and wear resistance, contribute to increase the seal's service life. Working circumstances, stress, temperature, and media all have an impact on the sealing ring's life. As a result, the precise life duration is determined by the application and its operating conditions.
Q: What's the difference between hydrogenated nitrile o rings and silicone rubber (VMQ) seals?
A: HNBR and silicone rubber (VMQ) are two distinct sealing materials with varying properties. In comparison to silicone rubber, HNBR sealing rings are more resistant to heat, oil, and chemicals. Silicone rubber operates well in high temperatures and is resistant to oxygen and ozone. The material to employ should be determined by the unique application requirements and work environment.
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