Special rubber refers to rubber with characteristics of high temperature resistance, oil resistance, ozone resistance, aging resistance and high air tightness. Commonly used are silicone rubber, various fluororubber, polysulfide rubber, chlorohydrin rubber, nitrile rubber, polyacrylate rubber, polyurethane rubber and butyl rubber, which are mainly used in special occasions requiring certain characteristics.

It refers to rubber with special properties (such as high temperature resistance, oil resistance, ozone resistance, aging resistance and high air tightness) and applied to special occasions and marine castings, such as nitrile rubber, butyl rubber, silicone rubber and fluororubber. Although the amount of special rubber is small, it is indispensable in special applications.