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The intensive development in the field of the synthetic elastomers resulted in a series of new materials, bearing the features of very high quality.
These are:

silicone elastomer,
ethylene-propylene elastomer,
chlorosulfonated polyethylene,
chlorinated polyethylene,
ethylvinyl
acetate,
polychloroprene.

Some of them, as ethylene-propylene, have become an irreplaceable insulating material. The stated elastomers, together with some others, have established themselves in the cable determine the field of application of the said insulated conductors or cables.

All well-know world standards prescribe the type of elastomer for a specific type of insulated conductor or cable, depending on the application and the place where it is to be used.