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May 25, 2024

Top Nbr O Ring Manufacturers Comprehensive Guide Sourcing from China.

Top nbr o ring in China introduce,list main products and website if have

China is home to a plethora of o-ring manufacturers, but some of the top ones include:

1. Xlong Seal: Xlong Seal specializes in producing high-quality o-rings made from materials such as NBR, EPDM, silicone, and Viton. Their main products include standard o-rings, custom o-rings, and special o-rings for specific applications. Website:

2. Ningbo Heli Seal Company: Ningbo Heli Seal Company offers a wide range of o-ring products, including rubber o-rings, custom o-rings, and other sealing solutions. They are known for their competitive prices and quick delivery times. Website:

3. Yuyao No.4 Instrument Factory: Yuyao No.4 Instrument Factory is a leading manufacturer of o-rings in China, specializing in producing standard and custom o-rings for various industries. They also offer other sealing products such as gaskets and seals. Website:

4. Jiangyin No.4 Rubber Products Co., Ltd: Jiangyin No.4 Rubber Products Co., Ltd is a well-established o-ring manufacturer in China, offering a wide range of o-ring products in different sizes and materials. They cater to both domestic and international markets. Website:

These top o-ring manufacturers in China are known for their high-quality products, competitive prices, and excellent customer service. Whether you are looking for standard o-rings or custom sealing solutions, these companies have the expertise and capabilities to meet your needs.

nbr o ring

Types of nbr o ring

NBR O-rings, or nitrile rubber O-rings, are a common type of sealing component used in various industries due to their excellent resistance to oil, fuel, and other petroleum-based fluids. There are several types of NBR O-rings available, each designed to meet specific performance requirements:

1. Standard NBR O-rings: These are the most common type of NBR O-rings and are suitable for a wide range of applications. They offer good resistance to oils, fuels, and hydraulic fluids, making them ideal for use in machinery, automotive, and construction industries.

2. High-temperature NBR O-rings: These O-rings are specially formulated to withstand elevated temperatures, making them suitable for applications where standard NBR O-rings would fail. They are often used in engine seals, exhaust systems, and other high-temperature environments.

3. Low-temperature NBR O-rings: Conversely, low-temperature NBR O-rings are designed to remain flexible and resilient in cold conditions. They are commonly used in refrigeration systems, cryogenic applications, and other low-temperature environments.

4. FDA-compliant NBR O-rings: These O-rings are manufactured using materials that meet FDA standards for use in food and beverage processing equipment. They are designed to resist oils and greases commonly found in food processing environments.

5. Ozone-resistant NBR O-rings: Ozone can degrade rubber materials over time, but ozone-resistant NBR O-rings are formulated to withstand exposure to this harmful gas. They are often used in outdoor applications, such as automotive weather sealing and marine equipment.

Overall, NBR O-rings are versatile sealing components that can be customized to meet specific requirements, making them a popular choice for a wide range of applications across various industries.

Pros and Cons of Using nbr o ring

NBR o-rings, or nitrile rubber o-rings, are a popular choice for a variety of applications due to their excellent resistance to oil, fuel, and other chemicals. They are also known for their flexibility, durability, and cost-effectiveness. However, there are some drawbacks to using NBR o-rings as well.


1. Chemical Resistance: NBR o-rings are highly resistant to oil, fuel, and many other chemicals, making them a reliable choice for applications involving these substances.

2. Flexibility: NBR o-rings are flexible and can be easily compressed to create a tight seal, even in challenging environments.

3. Durability: NBR o-rings are known for their durability and long-lasting performance, making them a cost-effective option for many applications.

4. Cost-Effectiveness: NBR o-rings are generally more affordable than other types of o-rings, making them a popular choice for budget-conscious applications.


1. Temperature Limitations: NBR o-rings have a temperature limit of around 120°C, which may not be suitable for high-temperature applications.

2. Low-Pressure Resistance: NBR o-rings have a lower pressure resistance compared to other materials, which may limit their use in high-pressure applications.

3. Poor Ozone Resistance: NBR o-rings are susceptible to damage from ozone exposure, which can lead to premature degradation.

4. Limited Compatibility: NBR o-rings may not be compatible with certain chemicals and fluids, which can lead to degradation and failure in those applications.

In conclusion, NBR o-rings are a popular choice for many applications due to their excellent chemical resistance, flexibility, durability, and cost-effectiveness. However, they may not be suitable for high-temperature or high-pressure applications, and care must be taken to ensure compatibility with the specific chemicals and fluids being used.

nbr o ring Reference Specifications (varies for different product)

NBR O-rings, also known as nitrile rubber O-rings, are a popular choice for sealing applications due to their excellent resistance to oils, fuels, and other petroleum-based fluids. They are also known for their durability, flexibility, and cost-effectiveness. Here are some reference specifications for NBR O-rings:

– Material: Nitrile rubber (NBR)

– Temperature range: -40°C to +120°C

– Hardness: 70-90 Shore A

– Tensile strength: 14-22 MPa

– Compression set: 15-40%

– Color: Black

– Available sizes: Various standard sizes ranging from 1mm to 1000mm in diameter

NBR O-rings are commonly used in automotive, aerospace, oil and gas, and industrial applications. They can be found in engines, hydraulic systems, pumps, and various other mechanical systems where a reliable and cost-effective sealing solution is required.

When selecting NBR O-rings for a specific application, it is important to consider factors such as temperature range, chemical compatibility, and pressure rating. It is also recommended to choose the right size and hardness to ensure a proper seal.

Overall, NBR O-rings are a versatile and reliable sealing solution that can meet the demands of a wide range of industries and applications. Their excellent resistance to oils and fuels, along with their durability and cost-effectiveness, make them a popular choice for sealing applications.

nbr o ring

Applications of nbr o ring

Nitrile Butadiene Rubber (NBR) O-rings are commonly used in a wide range of applications due to their excellent resistance to oils, fuels, and chemicals. One of the main uses of NBR O-rings is in hydraulic systems, where they provide a reliable seal between moving parts to prevent leaks and maintain proper pressure levels. They are also commonly used in automotive applications, such as in fuel injectors, fuel pumps, and engine components, due to their resistance to oil and fuel.

Additionally, NBR O-rings are employed in pneumatic systems, compressors, and air tools where they provide a durable and long-lasting seal against air leakage. The resistance of NBR O-rings to abrasion and tear makes them ideal for use in dynamic applications such as valves, pumps, and cylinders.

In addition to these industrial applications, NBR O-rings are also used in household appliances, water filters, and plumbing systems where they provide a reliable seal against water and other liquids. They are also commonly used in medical devices and equipment, such as blood pressure monitors and IV infusion pumps, due to their biocompatibility and resistance to a wide range of chemicals.

Overall, NBR O-rings are a versatile sealing solution that can be used in a wide variety of applications across different industries due to their excellent chemical resistance, durability, and ability to maintain a tight seal.

Material of nbr o ring

Nitrile rubber, also known as NBR (acrylonitrile butadiene rubber), is a synthetic rubber derived from a copolymer of acrylonitrile and butadiene. It is commonly used for manufacturing o-rings due to its excellent resistance to oil, fuel, and other petroleum-based fluids. NBR o-rings have a high tensile strength and are able to withstand a wide range of temperatures, making them suitable for various industrial applications.

NBR o-rings are known for their durability and reliability, making them popular in industries such as automotive, aerospace, and oil and gas. They are often used in sealing applications where resistance to oils, fuels, and hydraulic fluids is required. NBR o-rings can also withstand exposure to ozone, sunlight, and weathering, making them suitable for outdoor applications.

One of the key advantages of NBR o-rings is their cost-effectiveness. They are relatively inexpensive compared to other types of rubber o-rings, making them a popular choice for many industries. NBR o-rings are also easy to install and maintain, making them a convenient sealing solution for various applications.

In conclusion, NBR o-rings are a popular choice for sealing applications due to their excellent resistance to oils, fuels, and other petroleum-based fluids. They are durable, reliable, and cost-effective, making them a practical choice for industries where these properties are essential.

Quality Testing Methods for nbr o ring and how to control the quality

There are several quality testing methods for NBR O-rings that can be used to ensure their durability and performance. Some of the common testing methods include:

1. Dimensional testing: This involves checking the dimensions of the NBR O-ring to ensure it meets the specified tolerances. This can be done using calipers or other measuring devices.

2. Hardness testing: The hardness of the NBR O-ring can be tested using a durometer. This can help determine if the O-ring is within the specified hardness range for its intended application.

3. Compression set testing: This test measures the ability of the NBR O-ring to recover its original shape after being compressed. It can be done by compressing the O-ring for a period of time and then measuring how well it rebounds.

4. Tensile testing: Tensile testing is used to determine the strength and elasticity of the NBR O-ring. It involves stretching the O-ring until it breaks to measure its tensile strength.

To control the quality of NBR O-rings, it is important to establish clear quality control processes and procedures. This may include regular inspection of incoming materials, in-process testing during production, and final inspection before shipment. It is also important to train staff on quality control procedures and ensure that they are followed consistently.

By implementing these quality testing methods and quality control measures, manufacturers can ensure that NBR O-rings meet the required specifications and standards for performance and durability. This can help prevent defects and ensure customer satisfaction.

nbr o ring

The Work Process and how to use nbr o ring

The work process involving the use of NBR O-rings starts with identifying the specific application and requirements for the O-ring. NBR O-rings are commonly used in sealing applications due to their resistance to petroleum-based fluids, as well as their flexibility and durability.

Once the appropriate size and type of NBR O-ring have been selected, the O-ring is installed in the designated sealing groove, ensuring that it is properly seated and free from any twists or kinks. It is important to make sure that the O-ring is compatible with the surrounding material and that proper lubrication is used during installation to prevent damage to the O-ring.

After installation, the system is tested to ensure that the O-ring is effectively sealing the connection and preventing any leaks. Regular maintenance and inspection of the O-ring are also important to ensure its continued effectiveness in sealing applications.

In conclusion, using NBR O-rings involves careful selection, proper installation, and regular maintenance to ensure optimal performance. By following these steps, the NBR O-ring can effectively seal connections and prevent leaks in a variety of industrial and commercial applications.

nbr o ring Importing questions including Cost,Supplier,Sample,Certification and Market

When importing O-rings, there are several important factors to consider.

Cost is a crucial aspect to keep in mind when choosing a supplier. It’s essential to compare prices from different suppliers to ensure you are getting the best value for your money. Keep in mind that the cost of O-rings can vary depending on factors such as material, size, and quantity.

When selecting a supplier, it’s important to consider their reputation and track record. Look for suppliers who have a history of providing high-quality products and reliable service. You may also want to request samples from potential suppliers to ensure the O-rings meet your specifications and quality standards.

Certification is another important factor to consider when importing O-rings. Make sure the supplier you choose has the necessary certifications to ensure the O-rings meet industry standards and regulations. This can help prevent any issues with quality control or compliance down the line.

It’s also important to consider the market for O-rings in your region. Research the demand for O-rings in your industry to ensure there is a market for the products you plan to import. Consider factors such as competition, pricing, and potential customers when evaluating the market for O-rings in your area.

By carefully considering these factors, you can ensure a successful O-ring importation process that meets your needs and expectations.

How to find and select check reliable nbr o ring manufacturers in China

When looking for reliable NBR O-ring manufacturers in China, there are several key factors to consider in order to make an informed decision. Here are some steps on how to find and select a reputable manufacturer:

1. Research online: Use search engines, B2B platforms, and industry directories to find a list of NBR O-ring manufacturers in China. Look for companies with a good reputation, positive reviews, and experience in the industry.

2. Verify certifications: Check if the manufacturer is ISO certified or if they have any other relevant certifications for quality management. This will ensure that they meet international standards for production.

3. Assess production capacity: Determine if the manufacturer has the capacity to meet your production needs. Consider factors such as lead times, order quantities, and production capabilities.

4. Request samples: Ask for samples of their NBR O-rings to assess quality and performance. This will give you a hands-on experience with their products before making a bulk order.

5. Get quotes and compare prices: Contact multiple manufacturers to get quotes for your specific requirements. Compare pricing, lead times, and quality of products to make an informed decision.

6. Check customer service: Evaluate the manufacturer’s customer service and communication. Ensure that they are responsive, helpful, and easy to work with.

By following these steps, you can find and select a reliable NBR O-ring manufacturer in China that meets your requirements and delivers high-quality products. Remember to conduct thorough research and due diligence before making a final decision.

Background Research for nbr o ring manufacturers Companies in China, use

When it comes to finding top-quality nbr o ring manufacturers in China, there are several valuable resources that can help customers make informed decisions. One of the most popular resources is, which provides a comprehensive database of verified manufacturers in China. Customers can easily search for nbr o ring manufacturers on this platform and access detailed information about their products, services, and certifications.

Another useful tool for researching nbr o ring manufacturers in China is, which archives websites and allows customers to track the history of a manufacturer’s online presence. By reviewing past versions of a manufacturer’s website, customers can get a better understanding of their reputation, reliability, and experience in the industry. is also a valuable resource for customers looking to find nbr o ring manufacturers in China. This platform provides real-time data on import and export activities, allowing customers to track the performance of manufacturers and verify their credibility in the market. By analyzing import data on, customers can identify leading nbr o ring manufacturers in China and make informed decisions based on their track record and customer feedback.

In conclusion,,, and are all essential tools for customers seeking high-quality nbr o ring manufacturers in China. By utilizing these resources, customers can access valuable information, track manufacturers’ performance, and make well-informed decisions when choosing a supplier for their nbr o ring needs.

nbr o ring

Price Cost Research for nbr o ring manufacturers Companies in China, use and

Based on research conducted on and, the price range for NBR O-rings manufactured by companies in China varies depending on the size, material, and quantity ordered.

On, the prices for NBR O-rings start from as low as $0.01 per piece for standard sizes and can go up to $1 or more per piece for larger sizes or specialized materials. The minimum order quantity also plays a role in the pricing, with bulk orders typically resulting in lower prices per unit.

Similarly, offers a wide range of NBR O-ring manufacturers in China, with prices ranging from $0.05 to $0.5 per piece for standard sizes. Custom sizes or materials may be priced higher, and again, larger order quantities often come with discounts.

It is important to note that additional costs such as shipping, import duties, and taxes may apply when ordering from overseas suppliers. It is recommended to request quotes from multiple suppliers, negotiate pricing based on order volume, and clarify all terms and conditions before placing an order to ensure a cost-effective purchase.

Shipping Cost for nbr o ring import from China

The shipping cost for importing NBR O rings from China will vary depending on several factors such as the quantity of the order, the weight and size of the package, and the shipping method chosen. Generally, the cost of shipping NBR O rings from China to other countries can range from $20 to $50 for small orders, and up to $200 or more for bulk orders.

For small orders of NBR O rings, air freight or express shipping services like DHL, FedEx, or UPS are commonly used. The shipping cost for these services will be higher compared to sea freight but will ensure faster delivery within a few days. For larger orders, sea freight may be a more cost-effective option, although the transit time will be longer, typically taking several weeks for the shipment to arrive at its destination.

It is advisable to compare quotes from different shipping companies and freight forwarders to determine the most cost-effective option for importing NBR O rings from China. Additionally, factors such as customs duties, taxes, and import fees should also be considered when calculating the total cost of importing NBR O rings from China.

Overall, choosing the most suitable shipping method based on the quantity of the order and budget constraints can help minimize costs while ensuring timely delivery of NBR O rings imported from China.

nbr o ring

Compare China and Other nbr o ring Markets: Products Quality and Price,Visible and Hidden Costs

China is known for its competitive pricing when it comes to nbr o-rings compared to other markets. The quality of products from China is generally good, with many manufacturers meeting international standards. However, some buyers may have concerns about the consistency of quality control in Chinese factories.

In terms of price, China often offers the lowest prices for nbr o-rings compared to other markets. This is mainly due to the lower manufacturing costs in China, such as lower labor costs and overhead expenses. In contrast, other markets like the US or Europe may have higher labor costs and more stringent regulations, leading to higher prices for nbr o-rings.

When considering visible and hidden costs, buyers need to take into account factors such as shipping and import taxes when purchasing nbr o-rings from China. These costs can add to the overall price of the product, which may make it less competitive compared to other markets. Additionally, the potential for longer lead times and communication barriers may also impact the overall cost of purchasing from China.

Overall, China offers competitive prices for nbr o-rings with good quality products. However, buyers need to consider additional costs and potential risks associated with importing from China. Other markets may offer higher quality products at a higher price, but with more reliability and transparency in terms of costs and processes. Ultimately, buyers need to weigh the benefits and drawbacks of each market to make an informed decision on where to source nbr o-rings.

Custom Private Labeling and Branding Opportunities with Chinese nbr o ring Manufacturers

Chinese NBR O-ring manufacturers offer custom private labeling and branding opportunities for businesses looking to create their own unique product line. By partnering with a manufacturer in China, companies can take advantage of cost-effective production methods and high-quality materials to create a custom product that meets their specific needs.

With custom private labeling, businesses can showcase their brand identity and create a cohesive look for their products. Manufacturers can work with companies to design custom packaging, labels, and logos that reflect their brand image. This allows businesses to differentiate themselves in the market and stand out from competitors.

Additionally, partnering with a Chinese NBR O-ring manufacturer allows businesses to take advantage of the expertise and experience of the manufacturer. Manufacturers in China have extensive knowledge of materials, production techniques, and industry standards, ensuring that the final product meets high quality standards.

Overall, partnering with a Chinese NBR O-ring manufacturer for custom private labeling and branding opportunities can help businesses create a unique product line that reflects their brand identity and meets their specific needs. By leveraging the expertise and cost-effective production methods available in China, businesses can create a high-quality product that sets them apart in the market.

Tips for Procurement and Considerations when Purchasing nbr o ring

1. Identify the specific requirements for the NBR O-ring, such as size, material composition, hardness, and temperature resistance. This will help you narrow down your options and ensure that you are purchasing the right product for your needs.

2. Research and compare suppliers to ensure that you are getting the best quality product at the most competitive price. Look for suppliers with a good reputation for quality and reliability in the industry.

3. Consider the quantity of NBR O-rings that you will need to purchase. Buying in bulk can often result in cost savings and ensure that you have an adequate supply on hand for future needs.

4. Evaluate the supplier’s delivery and lead time to ensure that you will receive your NBR O-rings in a timely manner. This can help you avoid production delays and keep your operations running smoothly.

5. Consider the supplier’s customer service and after-sales support. Choose a supplier that is responsive and accessible to address any issues or concerns that may arise during the procurement process.

6. Check the supplier’s certifications and compliance with industry standards to ensure that you are purchasing a high-quality product that meets all necessary safety and performance requirements.

7. Evaluate the supplier’s warranty and return policy to ensure that you have recourse in case the NBR O-rings do not meet your expectations or requirements.

8. Consider any additional services or value-added offerings that the supplier may provide, such as custom sizing or packaging options, to meet your specific needs.

nbr o ring

FAQs on Sourcing and Manufacturing nbr o ring in China

1. What is the process of sourcing NBR O-rings in China?

To source NBR O-rings in China, businesses can start by researching suppliers online, attending trade shows, or working with a sourcing agent. It is important to conduct thorough due diligence on potential suppliers, including visiting their facilities and requesting samples before making a decision.

2. How can I ensure quality when manufacturing NBR O-rings in China?

To ensure quality when manufacturing NBR O-rings in China, businesses should work closely with their suppliers to establish clear quality standards and requirements. Regular quality inspections should be conducted throughout the manufacturing process to identify and address any issues that may arise.

3. What are the benefits of sourcing NBR O-rings from China?

Sourcing NBR O-rings from China can offer cost savings, access to a wide range of suppliers, and the ability to leverage China’s advanced manufacturing capabilities. Additionally, China is known for its high-quality rubber products and has a reputation for producing reliable O-rings.

4. How can I stay updated on industry trends and regulations in China?

To stay updated on industry trends and regulations in China, businesses can join industry associations, attend trade shows and conferences, and subscribe to industry publications. Working with a reputable sourcing agent who is well-versed in Chinese regulations and market trends can also help ensure compliance and success in sourcing NBR O-rings in China.

Why contact get free quota from reliable nbr o ring suppliers? is a trusted platform for sourcing products from reliable suppliers in China. By contacting them, you can access their network of verified NBR O-ring suppliers who have been vetted for their quality and reliability.

Obtaining a free quota from these suppliers through allows you to compare pricing and quality from various sources, ensuring that you are getting the best deal for your NBR O-ring needs. This can save you time and effort in researching and vetting suppliers on your own, as has already done the legwork for you.

Furthermore, by working with reputable NBR O-ring suppliers, you can ensure that the products you receive meet the necessary standards and specifications for your applications. This can help prevent issues such as product defects or delays in production, ultimately saving you both time and money.

In conclusion, contacting to get a free quota from reliable NBR O-ring suppliers is a smart business decision that can help you streamline your sourcing process and secure high-quality products for your needs.

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