Eco NBR is an elastomer derived from acrylonitrile-butadiene rubber, widely applied in U-rings, chevron packings, special seals, and diverse components. It exhibits excellent resistance to mineral oils, greases, and HFA, HFB, and HFC pressure fluids. However, it is not compatible with glycol-based brake fluids, HFD fluids, aromatic fluids (like benzene), esters, ketones, amines, concentrated acids, or bases.