Are you looking for the best hydrogenated nitrile (HNBR) o-ring factories in China? If so, you’re in the right place. In this article, we’ll compare the top manufacturers, highlighting their unique strengths, product ranges, and what sets them apart in the industry. Let’s dive in and find the perfect fit for your needs.

Custom HNBR O-Ring Manufacturer in China

Product Details: HNBR (Hydrogenated Nitrile Butadiene Rubber) O-rings are made by hydrogenating the double bonds in nitrile’s butadiene segments, enhancing their heat, ozone, and chemical resistance. They are available in 70, 80, and 90 durometers and are suitable for use with petroleum-based oils and fuels, aliphatic hydrocarbons, vegetable oils, silicone oils and greases, ethylene glycol, water, and steam up to 300°F. They also resist diluted acids, bases, and salt solutions. The ACN content varies from 17% to 49%, with standard HNBRs typically having 36% ACN content.

Pros:
– Superior heat, ozone, and chemical resistance compared to standard Nitrile.
– Excellent resistance to petroleum-based oils and fuels, aliphatic hydrocarbons,…
– Good performance in water and steam up to 300°F.
– Resistant to diluted acids, bases, and salt solutions.
– Can be used in demanding applications such as automotive and industrial settings…
– Better low-temperature properties with lower ACN content.

Cons:
– Not suitable for use with chlorinated hydrocarbons, ketones, ethers, esters, and…
– Higher ACN content results in inferior low-temperature properties.
– Sulfur-curing reduces heat resistance and causes an inferior compression set.

HNBR O-rings-Dongguan Lanhe Electronics

Product Details: HNBR O-rings are made from hydrogenated nitrile butadiene rubber, specifically designed for superior temperature and fuel resistance. They are available in various durometers (70, 80, 90 Shore A) and colors. The service temperature range is from -40°C to 150°C (-40°F to 300°F). HNBR O-rings are compatible with petroleum-based oils, fuels, aliphatic hydrocarbons, vegetable oils, silicone oils and greases, ethylene glycol, water, and steam.

Pros:
– Superior heat, ozone, and chemical resistance
– Excellent abrasion, wear, and compression set resistance
– Good resistance to many petroleum oils, greases, hydraulic fluids, and biologica…
– Compatible with Freon R-134a and compressor lubricant oil
– High tensile strength and durability
– Suitable for high dynamic loads and modern coolant systems

Cons:
– Not compatible with chlorinated hydrocarbons, ketones, ethers, esters, and stron…
– Not suitable for use with glycol-based brake fluids, polar solvents, aromatic or…
– Limited resistance to UV rays, direct sunlight, and weathering

Hydrogenated Nitrile (HNBR) O-Rings Supplier

Hydrogenated Nitrile Butadiene Rubber HNBR O-Ring …

Product Details: Hydrogenated Nitrile Butadiene Rubber (HNBR) O-Ring seals are known for their high temperature and fuel resistance. They are made by hydrogenating nitrile rubber, which removes most of the residual unsaturation in the polymer, making it less vulnerable to attack by heat, ozone, and oxygen. These O-Rings exhibit good resistance to petroleum-based oils, compression set, and various Freons. They are frequently used in automotive air conditioning systems employing R-134a refrigerants and in applications requiring high tensile and tear strength. The diameter range of these O-Rings is unlimited, and they can handle pressures up to 32MPa.

Pros:
– High temperature resistance
– Fuel resistance
– Good resistance to petroleum-based oils and compression set
– Suitable for use with various Freons
– High tensile and tear strength
– Unlimited diameter range
– Can handle pressures up to 32MPa

Cons:
– May be more expensive than some other types of rubber O-Rings
– Limited availability in certain sizes or specifications compared to more common…
– Requires specific handling and storage conditions to maintain its properties

HNBR O Ring 24*3.1mm Manufacturers and Suppliers China

Product Details: HNBR O Ring 24*3.1mm is made from Hydrogenated Nitrile Butadiene Rubber (HNBR). It has an inner diameter of 24 mm and a cross-section of 3.1 mm. HNBR offers excellent heat resistance up to 150 °C and ozone resistance, while maintaining the oil resistance of traditional NBR. It is produced by companies like Tianjin SWKS Technology & Development Co., Ltd.

Pros:
– Excellent heat resistance up to 150 °C
– Good ozone resistance
– Maintains excellent oil resistance of NBR
– Low rigidity and good process performance
– Lower cost compared to fluororubber
– Can be used with more fillers due to low density

Cons:
– Relatively expensive compared to traditional NBR
– Still more expensive than some other elastomers

HNBR O-ring- – Wenhou Rushi Sealing Technology Co.LTD

Product Details: HNBR O-Rings are made from Highly Saturated Nitrile, a material known for its physical strength and retention of properties after long-term exposure to heat, oil, and chemicals. They typically have a durometer range of 50 to 90 Shore A, with 70 and 80 being the most common. HNBR O-Rings are available in various colors such as black, green, yellow, and brown. They operate over a broad temperature range from -40°C to 150°C (minus 40 degrees to 302 degrees Fahrenheit). These O-Rings are widely used in automotive, oil and gas, industrial applications, chemical processing, power generation, aerospace, and refrigeration systems.

Pros:
– Excellent resistance to most common automotive fluids like engine oil, coolant,…
– Good resistance to many industrial chemicals and petroleum-based oils.
– Superior heat, ozone, and chemical resistance.
– High tensile strength and mechanical characteristics.
– Can be substituted for more costly fluorocarbon rubber in some applications.
– Good resistance to compression set and various Freons.

Cons:
– Not preferable for use with chlorinated hydrocarbons, ketones, ethers, esters, a…
– Limited compatibility with certain chemicals such as chlorinated hydrocarbons.

Hydrogenated Nitrile (HNBR, HSN) O-Rings – IKSonic

HNBR O-Rings, Hydrogenated Nitrile O-Ring Manufacturer

Product Details: HNBR O-rings are made from Hydrogenated Nitrile Rubber (HNBR), also known as Highly Saturated Nitrile (HSN). They are an upgraded version of NBR O-rings, offering better heat resistance, oil resistance, and weather resistance. The temperature range for HNBR O-rings is -40 °C to 150°C (-40 °F to 302 °F). They have a durometer hardness range of Shore A 40-90, with a standard durometer hardness of Shore A 70. The cross-section width ranges from 0.5 to 20 mm (0.020 to 0.787 inch), and the inside diameter ranges from 0.7 to 2965 mm (0.028 to 116.732 inch). HNBR O-rings are available in

standard sizes such as AS 568, BS 1806, ISO 3601, DIN 3771, and JIS B 2401. They have a shelf life of 5 – 10 years and are considered high-cost products.

Pros:
– Better heat resistance, oil resistance, and weather resistance compared to NBR O…
– Excellent abrasion resistance, corrosion resistance, tensile resistance, tear re…
– Good compatibility with fuel, ozone, sunlight, and other atmospheric conditions.
– Resistant to acid, oil, and solvents, with good high-temperature resistance, hig…
– Suitable for use in petroleum-based oils and fuels, aliphatic hydrocarbons, vege…

Cons:
– Not recommended for use with alcohols, esters, gasoline, or aromatic solutions.
– Not preferable for use with chlorinated hydrocarbons, ketones, ethers, esters, a…
– Higher cost compared to NBR O-rings, though lower than Viton O-rings.
– Performance in low temperature applications decreases as the acrylonitrile conte…

Green HNBR O-rings for Gasoline

Product Details: Green HNBR O-rings for Gasoline are produced from hydrogenated nitrile specially engineered for outstanding temperature and chemical resistance. They are available in various hardness levels, including 60, 70, and 80 Shore A. The temperature range for these O-rings is from -40°C to 155°C. Key properties include elongation at break and tensile strength, with specific values such as 360% elongation and 11.35 MPa tensile strength for the HN 400 compound.

Pros:
– Excellent resistance to aliphatic hydrocarbons, automatic transmission fluid, au…
– Good abrasion and wear resistance.
– High temperature resistance up to 155°C.
– Compatible with gasoline and other petroleum-based fuels.

Cons:
– Not compatible with chlorinated hydrocarbons.
– Poor resistance to polar solvents (ketones), strong acids.
– Not suitable for use with aromatic fuels, glycol-based brake fluids, and non-fla…

Hydrogenated Nitrile Butadiene Rubber O-Ring

Product Details: HNBR O-rings are made from a synthetic polymer obtained by saturating the double bonds in nitrile’s butadiene segments with hydrogen. This process enhances their heat, ozone, and chemical resistance. They are available in 70, 80, and 90 durometers and are suitable for use with petroleum-based oils and fuels, aliphatic hydrocarbons, vegetable oils, silicone oils and greases, ethylene glycol, water, and steam up to 300°F, and diluted acids, bases, and salt solutions. The standard ACN content is typically 36%, which balances low-temperature properties and resistance to fuels and polar lubricants[1][3][5].

Pros:
– Superior heat, ozone, and chemical resistance compared to standard Nitrile
– Excellent abrasion, wear, and compression set resistance
– Compatible with a wide range of fluids including petroleum-based oils, aliphatic…
– Good performance in high dynamic loads and resistance to sour gas and dilute aci…
– Suitable for automotive refrigerant service and new bio-oils

Cons:
– Not compatible with chlorinated hydrocarbons, ketones, ethers, esters, and stron…
– Inferior performance with fuels of high aromatic content, aromatic hydrocarbons,…
– Reduced heat resistance if sulfur-cured instead of peroxide-cured
– Not suitable for exposure to direct sunlight, UV, weathering, and polar solvents

Comparison Table

Frequently Asked Questions (FAQs)

What are the key benefits of using Hydrogenated Nitrile (HNBR) O-Rings?

HNBR O-Rings offer several key benefits, including superior temperature and fuel resistance. They are more stable than traditional nitrile rubber due to the addition of hydrogen, which reduces reactivity. This makes them ideal for applications involving petroleum oils, fuels, refrigerant gases, and ozone, as well as use in high-temperature environments up to 300°F (150°C) and low temperatures down to -55°F (-48°C).

Which industries commonly use HNBR O-Rings in China?

HNBR O-Rings are widely used in various industries in China, including the automotive, aerospace, machinery, industrial components, and household appliance sectors. Their excellent heat resistance, ozone resistance, and chemical stability make them a preferred choice for applications that require durable and reliable sealing solutions.

How do Chinese manufacturers ensure the quality of HNBR O-Rings?

Chinese manufacturers of HNBR O-Rings emphasize quality control through rigorous testing and inspection processes. Many companies, such as SWKS and MAQIAO, have highly experienced staff who conduct thorough quality checks before shipping. They also use high-quality raw materials and adhere to international standards to ensure the products meet customer requirements.

Can I customize HNBR O-Rings according to my specific needs?

Yes, you can customize HNBR O-Rings to fit your specific requirements. Many Chinese manufacturers, such as Xiamen Flying Silicone Rubber Co., Ltd and SWKS, offer customized services where you can specify the material, size, and other parameters according to your design drawings. They provide OEM and ODM services, allowing you to tailor the products to your application needs.

What kind of customer support can I expect from Chinese HNBR O-Ring manufacturers?

Chinese HNBR O-Ring manufacturers often provide comprehensive customer support. This includes free samples for testing, after-sales service to assist with any issues, and professional guidance throughout the production and delivery process. Companies like Hongju Silicone and SWKS also offer prompt communication channels, such as email, WhatsApp, and WeChat, to ensure a smooth and satisfying customer experience.