NBR (Nitrile Butadiene Rubber) O-ring cord is a versatile and essential sealing material used in various industrial and mechanical applications. Here’s a detailed description of NBR O-ring cord products:

Description of NBR O-Ring Cord

Material: NBR O-ring cord is made from nitrile butadiene rubber, a synthetic rubber compound known for its excellent resistance to oils, fuels, and other chemicals. NBR is commonly used in sealing applications due to its resilience and durability.

Properties:

1. Chemical Resistance:
   • Oil and Fuel Resistance: NBR has outstanding resistance to petroleum-based fluids, including oils and fuels, making it ideal for automotive and industrial applications.
   • Chemical Compatibility: It is also resistant to various chemicals and solvents, though its compatibility should be verified for specific chemicals in critical applications.
2. Temperature Range:
   • Moderate Temperature Tolerance: NBR O-ring cord typically performs well in a temperature range of approximately -30°C to +100°C (-22°F to +212°F). Some formulations can withstand temperatures up to +120°C (+248°F) intermittently.
3. Mechanical Properties:
   • Durability: NBR O-ring cord is known for its robustness, with good resistance to wear, abrasion, and tear.
   • Compression Set Resistance: It maintains its sealing properties over time, even after being subjected to compression.
4. Flexibility and Resilience:
   • Flexibility: NBR O-ring cord is flexible and can be easily cut to custom lengths and shapes, which makes it adaptable for various sealing configurations.
   • Elasticity: It offers good rebound and recovery, allowing it to return to its original shape after compression.
5. Ease of Fabrication:
   • Customizable: NBR O-ring cord can be cut and spliced to create custom-sized O-rings on-site, providing flexibility in sealing solutions for non-standard sizes or specific applications.
   • Simple Handling: The cord is easy to handle and install, requiring minimal tools and equipment for creating O-rings.

Applications:

• Automotive Industry: Used for sealing applications in engines, fuel systems, and hydraulic systems where exposure to oils and fuels is common.
• Hydraulic Systems: Suitable for use in hydraulic machinery and equipment where reliable sealing is essential.
• Industrial Machinery: Employed in pumps, valves, and other machinery to prevent leaks and ensure proper functioning.

Advantages:

• Customizability: The cord can be easily cut and joined to create O-rings of various sizes and shapes, making it versatile for different applications.
• Cost-Effective: NBR O-ring cord is generally less expensive than pre-formed O-rings, especially for custom or low-volume needs.
• Reliable Sealing: Provides a reliable and durable seal in many demanding environments, contributing to the efficiency and longevity of equipment.

Considerations:

• Temperature Limitations: NBR O-ring cord is not suitable for extreme temperatures beyond its specified range. For very high or low temperatures, alternative materials might be required.
• Ozone and Weather Resistance: NBR may not be as resistant to ozone and UV radiation compared to other materials like FKM (fluorocarbon). Consider environmental conditions when selecting NBR.

In summary, NBR O-ring cord is a flexible, cost-effective, and reliable material for creating custom O-rings that excel in applications involving oils and fuels. Its ease of use and adaptability make it a valuable option for many industrial and mechanical sealing needs.