Buna N, also known as nitrile rubber, plays a crucial role in various industries, particularly in China, where its applications are expanding rapidly. This versatile material is renowned for its excellent resistance to oils, fuels, and chemicals, making it indispensable in automotive, aerospace, and manufacturing sectors. Understanding its properties is essential for engineers and manufacturers aiming to optimize performance and durability in their products.
In this guide, readers will explore the unique characteristics of Buna N, including its mechanical properties, thermal stability, and resistance to environmental factors. We will delve into the production processes, quality standards, and the latest advancements in Buna N technology. By the end of this guide, readers will gain valuable insights into how to effectively utilize Buna N in their applications, ensuring enhanced performance and reliability.
Comprehensive Guide to Buna-N O-Rings and Rubber Gaskets in China
In the world of industrial applications, Buna N O-rings play a crucial role in ensuring the reliability and efficiency of various systems. These versatile sealing components are essential in preventing leaks and maintaining pressure in hydraulic and pneumatic systems. Understanding their properties and applications is vital for engineers and manufacturers alike.
This guide delves into the intricacies of Buna N O-rings and Buna N rubber gaskets, particularly within the context of China’s manufacturing landscape. Readers will explore the material’s unique characteristics, production processes, and the factors influencing its performance.
Technical Features of Buna-N O-Rings
Buna-N O-Rings, also known as Nitrile O-Rings or NBR O-Rings, are made from a copolymer of acrylonitrile and butadiene. This composition gives them unique properties that make them suitable for various industrial applications. Below is a comparison table of their technical features:
| Feature | Description |
|---|---|
| Material | NBR (Nitrile Rubber/Buna-N) |
| Temperature Range | -40 °C to 120 °C (-40 °F to 248 °F) |
| Durometer Hardness | Shore A 40-90 (Standard: Shore A 70) |
| Color | Black (custom colors available) |
| Cross Section Shape | Round |
| Inside Diameter Range | 0.7 mm to 2965 mm (0.028 to 116.732 inch) |
| Shelf Life | 5 – 10 years |
| Chemical Resistance | Good resistance to oils, fuels, and solvents |
| Applications | Used in fuel tanks, lubricating oil tanks, and more |
Buna-N O-Rings are particularly valued for their resistance to petroleum-based oils and fuels, making them ideal for automotive and industrial applications.
Types of Buna-N O-Rings
Buna-N O-Rings come in various types, each suited for specific applications. The following table outlines the differences among the types:
| Type | Description | Applications |
|---|---|---|
| Standard Buna-N O-Rings | General-purpose O-Rings with good oil resistance. | Used in automotive and industrial machinery. |
| High-Temperature Buna-N O-Rings | Designed for higher temperature applications. | Suitable for engines and high-performance systems. |
| Low-Temperature Buna-N O-Rings | Effective in low-temperature environments. | Used in refrigeration and cryogenic applications. |
| Custom Buna-N O-Rings | Tailored to specific dimensions and requirements. | Used in specialized machinery and equipment. |
These variations allow manufacturers to select the most appropriate O-Ring for their specific needs, ensuring optimal performance and longevity.
Technical Features of Buna N Rubber Gaskets
Buna N rubber, also known as Nitrile rubber (NBR), is a synthetic rubber copolymer made from butadiene and acrylonitrile. Its unique composition gives it excellent chemical resistance, making it particularly suitable for producing gaskets used in a wide range of applications, especially in the chemical industry. Below is a comparison table highlighting its key properties:
| Property | Standard Compound | Special Compound |
|---|---|---|
| Temperature Resistance | -40°C to 100°C (-40°F to 212°F) | -55°C to 135°C (-67°F to 275°F) |
| Hardness | 40 to 90 Shore A | 40 to 90 Shore A |
| Tensile Strength | 14 MPa to 31 MPa | 14 MPa to 31 MPa |
| Elongation at Break | 200% to 600% | 200% to 600% |
| Tear Strength | Good | Good |
| Chemical Resistance | Excellent to oils and fuels | Excellent to oils and fuels |
Types of Buna N Rubber Gaskets
Buna N rubber can be formulated in various ways to suit specific applications. The following table outlines the different types of Buna N rubber and their characteristics:
| Type | Composition | Applications |
|---|---|---|
| Standard Buna N | 34% Acrylonitrile | General automotive and industrial applications |
| High Acrylonitrile Buna N | 50% Acrylonitrile | High-temperature and chemical applications |
| Low Acrylonitrile Buna N | 18% Acrylonitrile | Applications requiring flexibility |
| FDA-Approved Buna N | Varies | Food processing and medical applications |
Applications of Buna-N O-Rings and Rubber Gaskets
Buna-N O-Rings and rubber gaskets are utilized across various industries due to their versatility. Common applications include:
– Automotive Industry: Used in fuel systems, oil seals, and hydraulic systems.
– Aerospace: Employed in aircraft pumps and gearboxes.
– Manufacturing: Found in machinery that requires reliable sealing solutions.
– Hydraulics: Used in hydraulic systems for effective fluid containment.
Manufacturers like Savvy Rubber and Qianlang Rubber provide a range of Buna-N O-Rings tailored for these applications, ensuring quality and reliability.
Advantages of Buna-N O-Rings and Rubber Gaskets
Buna-N O-Rings and rubber gaskets offer several advantages, including:
– Cost-Effectiveness: They are generally less expensive than other rubber materials.
– Good Mechanical Properties: They exhibit excellent tensile strength and abrasion resistance.
– Chemical Compatibility: They resist a wide range of chemicals, making them suitable for various environments.
– Durability: With proper care, they can last for many years, reducing the need for frequent replacements.
These benefits make Buna-N O-Rings and rubber gaskets a popular choice among manufacturers and suppliers.
Conclusion
Buna-N O-Rings and rubber gaskets are vital components in many industrial applications, offering excellent sealing properties, durability, and cost-effectiveness. With various types available, manufacturers can select the most suitable O-Ring or gasket for their specific needs. Companies like Savvy Rubber, Qianlang Rubber, and Kaxite Sealing Materials are leading suppliers in China, providing high-quality Buna-N O-Rings and rubber gaskets to meet diverse industry requirements.
FAQs
1. What are Buna-N O-Rings made of?
Buna-N O-Rings are made from a copolymer of acrylonitrile and butadiene, known as NBR (Nitrile Rubber).
2. What is the temperature range for Buna-N O-Rings?
They can operate effectively within a temperature range of -40 °C to 120 °C (-40 °F to 248 °F).
3. Where can I buy Buna-N O-Rings in China?
You can purchase Buna-N O-Rings from manufacturers like Savvy Rubber and Qianlang Rubber.
4. What industries use Buna-N O-Rings?
Buna-N O-Rings are used in various industries, including automotive, aerospace, manufacturing, and hydraulics.
5. Are custom Buna-N O-Rings available?
Yes, many suppliers, including Kaxite Sealing Materials, offer custom Buna-N O-Rings tailored to specific dimensions and requirements.