ABSTRACT
This chapter is about fluoroelastomers containing inorganic atoms in their molecules, more specifically silicon (fluorosilicone elastomers) or phosphorus and nitrogen (fluorinated polyphosphazene elastomers). Both types of fluoroelastomers possess unique properties, such as resistance to elevated temperatures, excellent chemical resistance, and low swelling in a large variety of fluids. Fluorosilicone elastomers are available as gums and as liquid systems. Each of them requires a different processing technology. Fluorinated polyphosphazene elastomers were used successfully throughout the 1980s in the military, airspace, and automotive industries for specialty seals and diaphragms, and for oil field applications. They were very successful but, currently, they are available only by special order.
