Are you looking for the best NBR O-ring factories in China? With so many options available, it can be overwhelming to choose the right one. In this article, we’ll compare the top NBR O-ring manufacturers in China, highlighting their quality, range of products, and what sets them apart. Let’s dive in and find the perfect fit for your needs.

Wholesale NBR O-Rings with Good Price

Product Details: NBR O-Rings are made from nitrile butadiene rubber, primarily used for oil-resistant rubber products. The acrylonitrile content in NBR varies from 18-24%, 25-30%, 31-35%, 36-41%, and 42-46%. These O-Rings serve to seal the joining of two pieces to prevent the passage of air, gas, or liquid.

Pros:
– High oil resistance
– Versatile acrylonitrile content options for differ…
– Effective sealing performance

Cons:
– Limited resistance to certain chemicals and high t…
– Not suitable for applications requiring high ozone…

NBR O-Rings, Buna-N / Nitrile O-Rings – China Manufacturer

Product Details: NBR O-Rings, also known as Nitrile O-Rings, Buna-N O-Rings, or Perbunan O-Rings, are made by copolymerization of acrylonitrile and butadiene. The acrylonitrile content ranges from 18% to 50%. They have a temperature range of -40°C to 120°C and a durometer hardness range of Shore A 40-90, with a standard hardness of Shore A 70. They come in various shapes and sizes, including round, square, and rectangular, and are available in black or custom colors. Standard sizes include AS 568, BS 1806, ISO 3601, DIN 3771, and JIS B 2401. The shelf life is 5-10 years.

Pros:
– Low price and good performance, making them the mo…
– Good mechanical properties, including good abrasio…
– Good compatibility with fuel, oil, gasoline, and s…
– Extensive applications in fluid media such as petr…

Cons:
– Not suitable for use in polar solvents, such as ke…
– Low-temperature performance worsens with higher ac…
– Not recommended for applications involving alcohol…

FKM O Rings, China NBR O Ring supplier

Product Details: Global O-Ring and Seal, and similar providers, offer a wide range of o-rings, oil seals, o-ring cord stock, kits, and other sealing products. They have extensive inventories, including over 60 million o-rings in stock. Products include O-Rings, Oil Seals, Hydraulic and Pneumatic Seals, and custom-molded seals. Materials available include Nitrile, Viton, Kalrez, and more. Same-day shipping is available for orders received by 3pm CST.

Pros:
– Extensive inventory with over 60 million o-rings i…
– Same-day shipping for orders received by 3pm CST
– Wide range of materials and sizes available
– ISO 9001 certified for quality assurance
– Experienced technical sales team for personalized…

Cons:
– Large orders or those requiring vulcanizing/assemb…
– Some products may require specific technical knowl…

china manufacture black NBR 70 rubber o-ring with high …

Product Details: The Black NBR 70 Rubber O-Ring is made from NBR (nitrile butadiene rubber) with a hardness of 70 Shore. It is black in color and certified to ISO9001 standards. The product is used for hydraulic and pneumatic sealing applications. It is manufactured using CNC processing and comes with a detailed operation guide including user instructions, maintenance, and installation guidelines.

Pros:
– Easy to install with a complete detailed operation…
– Certified to ISO9001 standards ensuring high quali…
– Suitable for both hydraulic and pneumatic sealing…
– Manufactured using CNC processing for precision.

Cons:
– No specific cons mentioned on the product page.

China NBR HNBR FKM PTFE O Ring Manufacturer

Product Details: The O-ring is a type of seal with solid rubber material or PTFE and an O-shaped cross section. It is one of the most widely used hydraulic and pneumatic sealing systems. The initial radial or axial compression during installation gives the O-ring its initial sealing capability. The total sealing force is composed of the initial sealing force and the system pressure-generated sealing force, which increases with system pressure. Materials include NBR, HNBR, FKM, PTFE, and others. Operating conditions range from -32 to +204 ℃, depending on the material, and it can handle media such as oil, water, air, and gas.

Pros:
– Effective in both static and dynamic sealing appli…
– Wide range of materials to suit different operatin…
– Initial sealing capability enhanced by system pres…
– Used in various industries including oil and gas,…

Cons:
– Limited by speed and pressure in dynamic sealing s…
– Requires careful material selection based on opera…

China O Rings Manufacturers and Suppliers

China Manufacture Hydraulic Rubber Nitrile Buna-N NBR …

Product Details: The China Manufacture Hydraulic Rubber Nitrile Buna-N NBR O ring is made from nitrile rubber (NBR). Key features include: Color options of Black, Green, and Blue; Hardness range of 70~90A; Temperature resistance from -55℃ to 250℃. These O-rings are suitable for various hydraulic and mechanical applications.

Pros:
– High temperature resistance, operating from -55℃ t…
– Available in different colors (Black, Green, Blue)…
– Suitable for a wide range of hydraulic and mechani…

Cons:
– Limited information on specific applications or in…
– No details provided on the shelf life or storage r…

O-Rings, Rubber Seals – Best China Manufacturer & Supplier

Product Details: Savvy Rubber manufactures a wide range of o-rings, including standard, encapsulated, backup-rings, and x-rings. They offer various materials such as NBR, FKM (Viton), Silicone, EPDM, HNBR, CR, and Aflas. The o-rings are available in different sizes, shapes, and colors. The hardness of o-rings is measured in Shore A, typically ranging from 40 to 90, with 70 being the most commonly used. Savvy has thousands of molds and can provide fast delivery via door-to-door courier. They also offer custom o-ring production with low mold/tooling costs.

Pros:
– High-quality and diverse range of o-ring materials…
– Fast delivery options via door-to-door courier
– Low mold/tooling costs for custom o-rings
– Wide range of applications across various industri…
– Ability to produce o-rings in various colors and h…

Cons:
– Custom o-rings are more expensive due to their unc…
– Unique or non-commonly used colors may increase co…
– Higher hardness o-rings can be inconvenient to ins…

FKM NBR EPDM China Rubber O Ring

Product Details: SWKS Seal offers FKM, NBR, and EPDM China Rubber O Rings. These products are featured by quality materials and fine workmanship. The company is a leading designer and manufacturer of standard and nonstandard rubber seals, including O rings, oil seals, hydraulic seals, and more. The O rings are available in various sizes and are used in diverse applications due to their versatility and durability.

Pros:
– Quality materials ensure high performance and long…
– Fine workmanship guarantees precise and reliable s…
– Competitive pricing makes the products economicall…
– Versatile applications across various industries.

Cons:
– No specific cons mentioned on the webpage.
– Potential for limited availability of certain size…

Buna-N Nitrile O Ring Gasket Cord

Product Details: Buna-N Nitrile O Ring Gasket Cord is made from nitrile rubber (NBR). It is available in sizes from 1.00 mm to 25.00 mm in standard shore hardness, with larger diameters available on request. The material offers basic resistance to common oils and fuels, and it is known for its excellent sealing and mechanical properties.

Pros:
– Excellent sealing and mechanical properties
– Basic resistance to common oils and fuels
– Available in a wide range of sizes
– Low cost

Cons:
– Not recommended for dynamic applications without s…
– Service life can be affected by factors such as sy…

Comparison Table

Company	Product Details	Pros	Cons	Website
Wholesale NBR O-Rings with Good Price	NBR O-Rings are made from nitrile butadiene rubber, primarily used for oil-resistant rubber products…	– High oil resistance – Versatile acrylonitrile content options for differ… – Effective sealing pe…	– Limited resistance to certain chemicals and high t… – Not suitable for applications requiring hi…	www.hbmichu.com
NBR O-Rings, Buna-N / Nitrile O-Rings – China Manufacturer	NBR O-Rings, also known as Nitrile O-Rings, Buna-N O-Rings, or Perbunan O-Rings, are made by copolym…	– Low price and good performance, making them the mo… – Good mechanical properties, including good…	– Not suitable for use in polar solvents, such as ke… – Low-temperature performance worsens with h…	savvyrubber.com
FKM O Rings, China NBR O Ring supplier	Global O-Ring and Seal, and similar providers, offer a wide range of o-rings, oil seals, o-ring cord…	– Extensive inventory with over 60 million o-rings i… – Same-day shipping for orders received by 3…	– Large orders or those requiring vulcanizing/assemb… – Some products may require specific technic…	www.o-ringsseals.com
china manufacture black NBR 70 rubber o-ring with high …	The Black NBR 70 Rubber O-Ring is made from NBR (nitrile butadiene rubber) with a hardness of 70 Sho…	– Easy to install with a complete detailed operation… – Certified to ISO9001 standards ensuring hi…	– No specific cons mentioned on the product page.	www.dmsseals.com
China NBR HNBR FKM PTFE O Ring Manufacturer	The O-ring is a type of seal with solid rubber material or PTFE and an O-shaped cross section. It is…	– Effective in both static and dynamic sealing appli… – Wide range of materials to suit different…	– Limited by speed and pressure in dynamic sealing s… – Requires careful material selection based…	www.jst-seals.com
China O Rings Manufacturers and Suppliers				www.svks-rubberseal.com
China Manufacture Hydraulic Rubber Nitrile Buna-N NBR …	The China Manufacture Hydraulic Rubber Nitrile Buna-N NBR O ring is made from nitrile rubber (NBR)….	– High temperature resistance, operating from -55℃ t… – Available in different colors (Black, Gree…	– Limited information on specific applications or in… – No details provided on the shelf life or s…	www.dmsseals.com
O-Rings, Rubber Seals – Best China Manufacturer & Supplier	Savvy Rubber manufactures a wide range of o-rings, including standard, encapsulated, backup-rings, a…	– High-quality and diverse range of o-ring materials… – Fast delivery options via door-to-door cou…	– Custom o-rings are more expensive due to their unc… – Unique or non-commonly used colors may inc…	savvyrubber.com
FKM NBR EPDM China Rubber O Ring	SWKS Seal offers FKM, NBR, and EPDM China Rubber O Rings. These products are featured by quality mat…	– Quality materials ensure high performance and long… – Fine workmanship guarantees precise and re…	– No specific cons mentioned on the webpage. – Potential for limited availability of certain size…	www.svks-rubberseal.com
Buna-N Nitrile O Ring Gasket Cord	Buna-N Nitrile O Ring Gasket Cord is made from nitrile rubber (NBR). It is available in sizes from 1…	– Excellent sealing and mechanical properties – Basic resistance to common oils and fuels – Availabl…	– Not recommended for dynamic applications without s… – Service life can be affected by factors su…	www.seal-china.com

Frequently Asked Questions (FAQs)

What are NBR O-Rings and why are they widely used?

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NBR O-Rings, also known as Nitrile or Buna-N O-Rings, are made from a copolymer of acrylonitrile and butadiene. They are widely used due to their excellent mechanical properties, good abrasion resistance, and heat resistance. NBR O-Rings are particularly good with fuel, oil, and gasoline, making them a popular choice for applications in the automotive and aerospace industries.

What are the key properties and limitations of NBR O-Rings?

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NBR O-Rings have a temperature range of -40°C to 120°C and are available in various durometer hardness levels. They offer good resistance to petrochemical hydrocarbon fuels but are not suitable for use in polar solvents like ketones, ozone, or chloroform. The higher the acrylonitrile content, the better the resistance to fuels, but the worse the low-temperature performance.

How do I choose the right NBR O-Ring for my application?

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To choose the right NBR O-Ring, you need to consider the operating temperature, the type of fluid it will be exposed to, and the required durometer hardness. For example, if you need better fuel resistance, a higher acrylonitrile content might be necessary. Additionally, ensure the O-Ring size meets the standards such as AS568, BS 1806, or ISO 3601, depending on your region.

What are the common applications of NBR O-Rings?

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NBR O-Rings are commonly used in various industries, including automotive, aerospace, and industrial equipment. They are often found in fuel tanks, lubricating oil tanks, and in fluid media such as petroleum hydraulic oil, gasoline, and silicone oil. Their versatility and compatibility with many fluids make them a staple in many applications.

How can I ensure the quality and reliability of NBR O-Rings from Chinese manufacturers?

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To ensure the quality and reliability of NBR O-Rings from Chinese manufacturers, look for suppliers with international certifications like ISO 9001, ISO 14001, and IATF16949. Check if the manufacturer has a strong quality control process in place and if they offer custom options and testing to meet your specific requirements. Reputable manufacturers like Savvy Rubber and Hongjie Rubber Seal provide detailed product specifications and certifications to guarantee product quality.