Ester hardener for sands on water-glass. Flodur FM4 is a liquid hardener – ester of ethylene glycol diacetate modified with added catalyst.
Flodur FM4 is used to prepare self-hardening sands on water-glass for moulds and cores used in the production of cast steel, cast iron and non-ferrous metal castings. Flodur hardeners are produced in different versions from less reactive to more reactive (from Flodur FM1 to Flodur FM5).