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NBR Material O-ring

Nitrile rubber (NBR) O-rings, also known as Buna-N, are one of the most commonly used sealing elastomers due to their resistance to petroleum-based fuels and lubricants and their relatively low price.

Nitrile elastomers are copolymers of acrylonitrile and butadiene.

Description

Structural Design:

NBR has become the preferred choice among many applications due to its unique balance between flexibility, durability, durability, and economy.

Among Buna’s standout attributes is its impressive tensile strength, which generally falls between 1000 to 3000 PSI.

Due to the stability of its polymer structure, NBR O-rings exhibit excellent aging resistance. This feature ensures that they can maintain their functionality and physical properties even after extensive use, thereby extending their lifespan. 

It has relatively low cost, good mechanical properties, and basic tolerance to many common lubricants.

 

Summary of Advantages:

  • Relative low cost
  • Good/Excellent resistance to compression set and tear/abrasion
  • Has good/excellent tolerance to many media
  • Longer and more efficient service life
  • Good adhesion to metal surfaces

Typically made from polyurethane, alternative materials can be provided upon request to suit your specific needs.

Technical Information

Technical Parameters:

Hardness

70-90 Shore A

Material

NBR

Temperature(°C)

-50℃~110℃

Specifications

We have various sizes and can also accept customization

BP series

BS series

AS series

BG series

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