ECO (Epichlorohydrin/Fluorohydrin Rubber) is a high-performance synthetic rubber material prepared by reacting epichlorohydrin and diethanolamine to form polyether, which is then combined with fluorinated monomers. This material combines the high chemical resistance of epichlorohydrin rubber with the excellent high temperature and oil resistance of fluororubber, exhibiting excellent stability in extreme environments. The structural characteristics of ECO include epichromohydrin units and fluorine atoms, which give it a unique molecular structure. Among…