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 impacts the material’s performance, durability, and application suitability. This guide delves into the intricacies of Buna-N rubber density in China, a key player in the global rubber market.
Readers can expect to explore the factors influencing Buna-N rubber density, including composition, processing methods, and environmental conditions. The guide will also cover the significance of density in product design and quality assurance. By the end, readers will gain valuable insights into how density affects the overall functionality of Buna-N rubber in diverse applications.
Comprehensive Guide to Buna-N Rubber Density in China
Buna-N rubber, also known as nitrile rubber or NBR, is a synthetic rubber copolymer made from acrylonitrile and butadiene. It is widely used in various applications due to its excellent oil resistance, durability, and versatility. This guide will delve into the properties, technical features, and different types of Buna-N rubber, providing insights into its applications and benefits.
Technical Features of Buna-N Rubber
Buna-N rubber is known for its unique properties that make it suitable for a wide range of applications. Below is a comparison table highlighting its key technical features:
| Property | Value |
|---|---|
| Density | 1.19 – 1.20 g/cm³ |
| Hardness (Shore A) | 50 – 90 |
| Tensile Strength | 15 – 20 MPa (2175 – 2900 psi) |
| Elongation at Break | Up to 700% |
| Temperature Range | -40°F to 250°F |
| Compression Set | Max 29.4% |
| Ozone Resistance | Good |
| Chemical Resistance | Excellent against oils and fuels |
These properties make Buna-N rubber an ideal choice for applications in automotive, industrial, and manufacturing sectors.
Differences in Types of Buna-N Rubber
Buna-N rubber can be classified based on the acrylonitrile (ACN) content, which affects its properties and applications. The following table summarizes the differences between the types of Buna-N rubber:
| Type | ACN Content | Properties | Applications |
|---|---|---|---|
| High Nitrile | >45% | Excellent oil resistance, high strength | Seals, gaskets, O-rings |
| Medium Nitrile | 30-45% | Balanced properties | Automotive parts, fuel systems |
| Low Nitrile | <30% | Good flexibility, lower oil resistance | General-purpose seals, low-stress gaskets |
Understanding these differences helps manufacturers select the right type of Buna-N rubber for specific applications.
Applications of Buna-N Rubber
Buna-N rubber is utilized in various industries due to its versatility. Common applications include:
– Seals and Gaskets: Used in automotive and industrial applications for sealing fluids and gases.
– O-Rings: Essential in hydraulic and pneumatic systems to prevent leaks.
– Custom Molded Components: Tailored parts for specific machinery and equipment.
– Fuel Systems: Ideal for components exposed to fuels and oils due to its excellent chemical resistance.
Companies like www.marcorubber.com and www.mscdirect.com offer a range of Buna-N rubber products tailored for these applications.
Advantages of Buna-N Rubber
Buna-N rubber provides several advantages, making it a preferred choice in many industries:
- Durability: It withstands harsh environmental conditions, ensuring long-term performance.
- Oil and Fuel Resistance: Its resistance to oils and fuels makes it suitable for automotive and industrial applications.
- Cost-Effectiveness: Buna-N rubber is a cost-effective solution without compromising quality.
These benefits contribute to its widespread use in various sectors, including automotive, manufacturing, and oil and gas.
Conclusion
Buna-N rubber is a versatile and durable material that plays a crucial role in many industrial applications. Its unique properties, such as excellent oil resistance and flexibility, make it an ideal choice for seals, gaskets, and O-rings. Understanding the different types and their specific applications can help manufacturers make informed decisions when selecting Buna-N rubber for their needs. For more information on Buna-N rubber products, companies like plas-fab.com and www.rolling-components.com provide valuable resources.
FAQs
1. What is Buna-N rubber?
Buna-N rubber, also known as nitrile rubber or NBR, is a synthetic rubber made from acrylonitrile and butadiene, known for its excellent oil resistance and durability.
2. What are the main applications of Buna-N rubber?
Buna-N rubber is commonly used in seals, gaskets, O-rings, and custom molded components, particularly in automotive and industrial applications.
3. How does the ACN content affect Buna-N rubber?
The ACN content determines the rubber’s oil resistance and flexibility, with higher ACN content providing better oil resistance and strength.
4. Where can I find Buna-N rubber products?
Buna-N rubber products can be found at various suppliers, including www.marcorubber.com, www.mscdirect.com, and plas-fab.com.
5. What are the temperature limits for Buna-N rubber?
Buna-N rubber can typically operate in temperatures ranging from -40°F to 250°F, making it suitable for various environmental conditions.