Fluoroelastomers are a type of synthetic rubber which offers extraordinary resistance to chemicals, oil and heat, along with an expected service life above 200°C. This material possesses a high ratio of fluorine to hydrogen, outstanding heat stability due to absence of saturation, and exceptional oil resistance compared to other rubbers. Fluoroelastomers are categorised based on their properties and are divided into three broader categories FKM, FFKM & FEPM. FKM accounts for (80 %+) of the all fluoroelastomer and shows finest balance of all properties, with high heat resistance, improved low temperature performance and base resistance. The second type of fluoroelastomers are FFKM category, which have extraordinary fluid resistance, and high temperature resistance. The third category is FEPM which is used in aerospace applications.