Buna N rubber, also known as nitrile rubber, plays a crucial role in various industries, particularly in automotive and manufacturing sectors. Understanding its density is essential for engineers and manufacturers, as it directly influences material selection, performance, and product durability. This guide delves into the significance of Buna N rubber density, especially within the context of China’s growing industrial landscape.
Readers can expect to explore the factors affecting the density of Buna N rubber, including its composition and processing methods. The guide will also cover the implications of density variations on product applications and performance. By the end, readers will gain valuable insights into how density impacts the overall quality and functionality of Buna N rubber in various applications.
Guide to the Density of Buna-N Rubber in China
Buna-N rubber, also known as nitrile rubber (NBR), is a widely used synthetic rubber known for its excellent resistance to oils, fuels, and other chemicals. It is commonly utilized in various applications, including seals, gaskets, and O-rings. This guide provides an in-depth look at the density of Buna-N rubber, its technical features, and the differences between various types available in the market.
Technical Features of Buna-N Rubber
Buna-N rubber exhibits several key technical features that make it suitable for a wide range of applications. Below is a comparison table highlighting these features:
| Property | Typical Values | Test Method |
|---|---|---|
| Density | 1.19 – 1.3 g/cm³ | ISO 1183, ASTM D 297 |
| Hardness (Shore A) | 65 – 70 | ISO 48, ASTM D 1415 |
| Tensile Strength | 13.6 – 18 MPa (1970 – 2600 psi) | ISO 37, ASTM D 412 |
| Elongation at Break | 203% – 380% | ISO 37, ASTM D 412 |
| Compression Set | 24% – 29.4% | ISO 815, ASTM D 395 |
| Temperature Range | -30°F to 250°F | Varies by compound |
| Ozone Resistance | Good | FLTM BP 101-01 |
| Oil Resistance | Good to Excellent | ASTM D 471 |
These properties indicate that Buna-N rubber is a versatile material, suitable for various industrial applications, particularly where oil and chemical resistance is crucial.
Types of Buna-N Rubber
Buna-N rubber comes in various formulations, each designed to meet specific performance requirements. Below is a comparison table of different types of Buna-N rubber:
| Type | Durometer | Key Features | Applications |
|---|---|---|---|
| Buna-N M1002 | 65 | Fuel resistant, good mechanical properties | O-rings, seals |
| Buna-N B1105 | 70 | Metal detectable, FDA compliant | Food processing, medical applications |
| Buna-N N1206-70 | 70 | Excellent resistance to ozone and aging | Automotive seals, gaskets |
| Buna-N NBR | 70 | General-purpose, good resistance to many lubricants | Industrial applications |
| Buna-N NBR (High Acrylonitrile) | 75 | Enhanced oil resistance, high tensile strength | Oil and gas applications |
Each type of Buna-N rubber has unique characteristics that make it suitable for specific applications, ensuring that users can select the right material for their needs.
Density of Buna-N Rubber
The density of Buna-N rubber typically ranges from 1.19 to 1.3 g/cm³. This density is crucial as it affects the material’s mechanical properties, including tensile strength and elongation. A higher density often correlates with improved strength and durability, making it suitable for demanding applications.
In China, the density of Buna-N rubber is consistent with international standards, ensuring that manufacturers can rely on its performance in various environments. The density can vary slightly based on the specific formulation and additives used in the rubber compound.
Applications of Buna-N Rubber
Buna-N rubber is widely used across various industries due to its excellent properties. Common applications include:
– Automotive Industry: Used in seals, gaskets, and O-rings due to its oil resistance.
– Aerospace: Employed in fuel systems and hydraulic applications.
– Food Processing: Certain formulations are FDA compliant, making them suitable for food contact.
– Industrial Equipment: Used in machinery and equipment that require durable seals and gaskets.
The versatility of Buna-N rubber makes it a preferred choice in many sectors, ensuring reliability and performance.
Conclusion
Buna-N rubber is a vital material in various industries, known for its excellent density, mechanical properties, and resistance to oils and chemicals. Understanding the different types and their specific features allows manufacturers and engineers to select the right material for their applications. With consistent performance across formulations, Buna-N rubber remains a top choice for seals, gaskets, and other critical components.
FAQs
1. What is Buna-N rubber?
Buna-N rubber, or nitrile rubber (NBR), is a synthetic rubber known for its excellent resistance to oils, fuels, and chemicals, making it ideal for seals and gaskets.
2. What is the typical density of Buna-N rubber?
The density of Buna-N rubber typically ranges from 1.19 to 1.3 g/cm³, depending on the specific formulation.
3. What are the common applications of Buna-N rubber?
Buna-N rubber is commonly used in the automotive, aerospace, food processing, and industrial equipment sectors due to its durability and resistance to oils.
4. How does the density affect the performance of Buna-N rubber?
Higher density in Buna-N rubber often correlates with improved tensile strength and durability, making it suitable for demanding applications.
5. Where can I find more information about Buna-N rubber?
You can find detailed information about Buna-N rubber on websites like www.marcorubber.com, www.makeitfrom.com, and legacyrubber.com, which provide technical datasheets and product specifications.