Buna 70, a synthetic rubber widely used in various industries, plays a crucial role in China’s manufacturing landscape. As the country continues to expand its industrial capabilities, understanding Buna 70’s properties, applications, and production processes becomes increasingly important. This guide aims to provide readers with a comprehensive overview of Buna 70, highlighting its significance in both domestic and global markets.
In this in-depth exploration, readers will learn about the chemical composition of Buna 70, its unique characteristics, and the advantages it offers over other materials. The guide will also delve into the various applications of Buna 70, from automotive components to consumer goods, showcasing its versatility and essential role in modern manufacturing.
Additionally, the guide will cover the production techniques and technological advancements that have shaped Buna 70’s development in China. By examining the current trends and future prospects, readers will gain valuable insights into the challenges and opportunities within the synthetic rubber industry, equipping them with the knowledge to navigate this dynamic field effectively.
Comprehensive Guide to Buna 70 O-Rings
Buna 70 O-rings, also known as Nitrile or NBR O-rings, are essential components in various sealing applications across multiple industries. Their unique properties make them ideal for use in environments where resistance to oils, fuels, and other hydrocarbons is crucial. This guide will delve into the technical features, types, and applications of Buna 70 O-rings, providing a thorough understanding of their significance in industrial settings.
Technical Features of Buna 70 O-Rings
Buna 70 O-rings are made from a synthetic rubber known as Nitrile (NBR). They are characterized by their hardness rating of 70 on the Shore A scale, which indicates a balance between flexibility and durability. Below is a comparison table highlighting the key technical features of Buna 70 O-rings.
| Feature | Description |
|---|---|
| Material | Nitrile Rubber (NBR) |
| Hardness | 70 Shore A |
| Color | Typically Black |
| Temperature Range | -40°F to 248°F (-40°C to 120°C) |
| Oil Resistance | Excellent resistance to oils and fuels |
| Mechanical Properties | Good tensile strength and elongation |
| Common Standards | AS568, GB/T 3452.1, Metric Standard |
These features make Buna 70 O-rings suitable for a wide range of applications, from automotive to industrial machinery.
Types of Buna O-Rings
Buna O-rings come in various types, each designed for specific applications and environments. Below is a comparison table of different types of Buna O-rings.
| Type | Description | Applications |
|---|---|---|
| Standard Buna-N | General-purpose O-ring with good oil resistance | Automotive, hydraulic systems |
| High Nitrile | Contains more than 45% ACN for enhanced oil resistance | Oil and gas applications |
| Low Nitrile | Less than 30% ACN, suitable for less demanding applications | General sealing applications |
| Peroxide-Cured | Better heat resistance, suitable for high-temperature applications | Aerospace, automotive |
| Sulfur-Cured | Offers better low-temperature properties | Refrigeration, HVAC systems |
Each type of Buna O-ring has its unique advantages, making it essential to choose the right one for specific applications.
Applications of Buna 70 O-Rings
Buna 70 O-rings are widely used in various industries due to their excellent sealing capabilities. Here are some common applications:
- Automotive Industry: Used in fuel injectors, pumps, and engine components where oil resistance is critical.
- Hydraulic Systems: Essential for creating seals in hydraulic cylinders and pumps, preventing fluid leakage.
- Industrial Machinery: Employed in pumps, valves, and other machinery where durability and resistance to oils are necessary.
- Pneumatic Systems: Suitable for sealing air and gas connections, ensuring airtight seals.
- Fluid Transfer Systems: Used in pipes and fittings to prevent leaks in fluid transfer applications.
Leading manufacturers like Qianlang Rubber and SVKS Technology provide high-quality Buna 70 O-rings tailored to meet specific industry needs.
Conclusion
Buna 70 O-rings are vital components in various sealing applications, offering excellent resistance to oils and fuels. Their unique properties and versatility make them suitable for a wide range of industries, including automotive, hydraulic, and industrial machinery. Understanding the technical features and types of Buna O-rings can help in selecting the right product for specific applications.
For more information on Buna 70 O-rings, you can explore offerings from manufacturers like King Rubber, Lanhe Seals, and Jinshun Sealing Technology.
FAQs
1. What are Buna 70 O-rings made of?
Buna 70 O-rings are made from Nitrile rubber (NBR), which provides excellent oil and fuel resistance.
2. What is the hardness rating of Buna 70 O-rings?
Buna 70 O-rings have a hardness rating of 70 on the Shore A scale.
3. In what temperature range can Buna 70 O-rings operate?
They can operate in a temperature range of -40°F to 248°F (-40°C to 120°C).
4. Where are Buna 70 O-rings commonly used?
They are commonly used in automotive, hydraulic systems, industrial machinery, and pneumatic applications.
5. How do I choose the right type of Buna O-ring for my application?
Consider the specific requirements of your application, such as temperature, pressure, and the type of fluids involved, to select the appropriate Buna O-ring type.