How to choose O-rings made of Viton or NBR?

Recently, the selection of O-rings has become the focus of the industry. As two common O-ring materials, Viton and NBR rubber each have unique properties and applicable scope. So, in practical applications, how should we choose O-rings made of Viton or NBR?

Viton O-rings have excellent high temperature resistance, chemical corrosion resistance and oil resistance, and are suitable for high temperature, strong corrosion and high wear environments. For example, in the fields of aerospace, automobile, petrochemical, etc., Viton O-rings are widely used to seal high temperature gases, strong acid and alkali media and fuel.

NBR rubber O-rings have good oil resistance, wear resistance and aging resistance, and are suitable for general industrial and civil fields. For example, in the machinery manufacturing, hydraulic system, plumbing and sanitary ware industries, NBR rubber O-rings are widely used to seal lubricating oil, water and air.

When choosing O-ring materials, you need to consider the following factors:

1. Working environment: Select materials with corresponding performance according to the temperature, medium, pressure and other conditions of the working environment.

2. Sealing requirements: Select appropriate performance indicators such as hardness, compression set and tensile strength according to the sealing requirements.

In summary, whether to choose O-rings made of fluororubber or nitrile needs to be comprehensively considered according to the specific working environment and sealing requirements. In actual applications, you can consult us for more detailed material selection suggestions and technical support.