The undiluted resin exhibits a higher heat distortion, lower moisture absorption, lower shrinkage and lower expansion characteristics than obtainable with a diluted resin. HYSOL® casting compound EE4183 with hardener HD3475 is silica filled for improved thermal properties, lower shrinkage and lower expansion characteristics. They are resistant to gasoline, jet fuel and other solvents. LOCTITE® STYCAST RE 2039 is an amber, 2-part epoxy kit consisting of LOCTITE STYCAST RE 2039 and LOCTITE HYSOL® HD 0183 Epoxy Hardener. The mixture is recommended for casting coils, transformers and for general purpose casting.