Plastic chains have been developed for light duty power transmission applications. They can be utilized with steel or plastic-type material sprockets, and perform a variety of speeds.
A real advantage of plastic roller chain is that it could perform in harsh chemicals, Leaf Chain moisture and various temperature applications.
They self-lubricate and so 
are perfect for applications where cleanliness is important. Meals processing, medical and pc equipment and clean rooms are common uses for plastic-type roller chain.