Oil resistant rubber

It is generally referred to as nbr nitrile rubber and is used in the field of application in the sealing of oils and fuels. It also has good resistance to bending and abrasion. The percentage of acrylo-nitrile content in the compound can assume percentages ranging from 20% to 50%, and this entails large variations in the chemical-physical behavior of the rubber. NBR does not have good resistance to aging in contact with oxygen and ozone, and the tendency to deteriorate increases as the operating temperature increases; for better use, it is prudent to avoid direct contact between rubber and air, using it in immersion applications or maintaining a protective layer of lubricating oil.