igus claims that the E4.350 energy chain is currently the largest plastic energy chain in the world. It is predominately used for large, heavy, stiff cables such as those used on oil platforms, at steelworks and for heavy engineering. The E4.350 does not require any form of lubrication, it is modular and therefore easy to assemble; it is also highly wear-resistant, even in areas where oil or sea water are encountered.