Clearing Up the Confusion : Why NBR Rubber Sheets Might Not Be Oil Resistant?

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Clearing Up the Confusion : Why NBR Rubber Sheets Might Not Be Oil Resistant?

NBR rubber sheets are the top choice for oil resistance due to their performance and cost-effectiveness. They are widely used in gasket sheets, flooring sheets, machine pads, and areas with constant oil exposure. However, there are often questions about why NBR rubber sheets from different brands have varying oil resistance capabilities.

It turns out that the oil resistance level of NBR rubber sheets depends on the grade of the initial NBR raw material. The higher the acrylonitrile content in the NBR material, the better its oil resistance and heat resistance. Typically, NBR materials contain 18-51% acrylonitrile. Additionally, the chemical formulation used in the rubber mix also affects the oil resistance performance of NBR sheets.

Therefore, the difference in oil resistance among NBR rubber sheets from various brands or companies can be attributed to the different grades of NBR raw materials and manufacturing formulas they use. This results in NBR rubber sheets exhibiting different levels of oil resistance even under the same conditions.

To ensure optimal performance and value, it's advisable to consult with suppliers before selecting NBR rubber sheets. Choose NBR sheets with a Tensile strength greater than 7 MPa for the best results.