EL-CAST VFR PLUS is our newest innovation where fire safety is a priority. It is a filled, low viscosity, high temperature potting and encapsulating resin, with superior flame resistance, achieves 0 second AfterFlame with certain hardeners, has no flame drip and is easier to mix. Underwriter Laboratory (UL) approved at 94 V-O. Resin has excellent bonding properties, high gloss finish with minimal shrinkage and with 117 hardener is a soft 94 V-O material. Ideal for transformers, alarm systems, filters, magnetic components and surge protectors.