The Secret of Oil-Resistant NBR Rubber Sheets That Suppliers Never Tell You

650 Views |

The Secret of Oil-Resistant NBR Rubber Sheets That Suppliers Never Tell You

NBR rubber sheets are widely popular due to their outstanding properties and are the number one choice for oil resistance. They effectively resist petroleum oils, fuel oils, as well as vegetable and animal oils. This makes them ideal for use as oil-resistant floor mats, gaskets, seals, or in areas that come into prolonged contact with oil. However, there's a secret about NBR rubber sheets that suppliers never tell you : the grade of the NBR sheet.

NBR rubber sheets available on the market come in various grades, classified according to their acrylonitrile content. There are three main grades:

NBR Rubber Sheets with Low Acrylonitrile Content (< 23%) : These are not focused on oil resistance and are relatively inexpensive.
NBR Rubber Sheets with Medium Acrylonitrile Content (~33%) : These offer good oil resistance.
NBR Rubber Sheets with High Acrylonitrile Content (> 38%) : These provide excellent oil resistance.

Therefore, if you need oil-resistant NBR rubber sheets, it is recommended to choose those with medium or higher acrylonitrile content. This ensures that the NBR sheets can withstand oil exposure without swelling or changing size. Additionally, it's crucial to select NBR sheets with a tensile strength of > 7 MPa to ensure maximum durability and extended service life.

Understanding this secret helps you choose the right NBR rubber sheets, ensuring optimal performance, longevity, and value for your money.