Hempel Epoxy Filler is a two-component, solvent-free, epoxy filler, which when fully cured – is resistant to water, aliphatic hydrocarbons, and related products. Can be applied in thick coats up to approximately 5mm without runs or sags. Areas of Use 1. As a filler for metals, hardwood, and other rigid materials. 2. For filling of pinholes in weldings and similar irregularities in steel work not later exposed to strong chemicals.