Fluorocarbon elastomers are fluorine‐containing cross‐linked amorphous polymers with a carbon–carbon backbone, which are designed for demanding service application in hostile environments. This article reviews the development history of fluorocarbon elastomers and the basic properties of the polymers. A brief manufacturing process for the polymers is presented along with processing information to convert the fluorocarbon elastomers into useful parts for various applications. Major uses and specifications for these uses are also presented.

A practical laboratory procedure was developed to assess the effects of a fluorocarbon elastomer processing aid on the extrusion behaviour of several linear low density polyethylenes (LLDPEs) that are used for tubular film manufacture. The elastomer, Dynamar* Polymer Processing Additive PPA 2231, is a copolymer of vinylidene difluoride and hexafluoropropene and appears to act as a die lubricant.Data obtained with various concentrations of PPA 2231 in three different LLDPEs showed that this additive can reduce processing problems, such as draw resonance and melt fracture. The additive also appears to improve extrusion efficiency (lbs. output/hr/hp).

The tendency in the automotive industry to use smaller engines has resulted in a situation where lubricating oils are exposed to higher operating temperatures. This is especially the case in countries where there is no restriction on highway speed. Amine-based additives present in the oils (e.g., as dispersants and corrosion inhibitors) tend to slowly attack the conventional fluorocarbon elastomer seals under these conditions. As a result of that attack, the seal becomes brittle and eventually fails. A novel fluorocarbon elastomer of vinylidene fluoride, tetrafluoroethylene, and propylene has shown excellent aging behavior in the laboratory toward many aggressive engine oils at elevated temperature. Its improved resistance as compared to conventional fluorocarbon elastomers is attributed to the replacement of hexafluoropropylene with propylene.