Definition - What does Epoxide mean?
An epoxide is a cyclic ether with a three-atom ring. Epoxides are used to produce epoxy resins, which are used to protect against corrosion in metals.
Corrosionpedia explains Epoxide
An epoxide has properties that make it easily reactive and disassembled in both acidic and basic environments. Due to this trait, it easily forms polymers that are called epoxies. The properties of epoxies make them a good adhesive and ideal to implement as a surface coating to guard against corrosion.
Understanding Corrosion in Pumps and How to Deal With It