Epichlorohydrin rubber (ECO) has properties very similar to nitrile rubber but it has better heat and mineral oil resistance and improved low temperature flexibility. ECO’s possess also very low gas permeability, excellent ozone and weather resistance, good compression set and good heat and solvent resistance. Its resistance to acids, alkalis and ozone is also excellent.
Epichlorohydrin elastomers are widely used in the automotive industry for seals, hoses, gaskets, O-rings, cable jackets, and belts. ECO's are also an important ingredient of rubber glues. However, they are unsuitable for rubber to metal bonding because of their corrosiveness to metals.