IMPCO'SPolyflex PR fire-resistant impregnation resin is available for sealing electronic connectors, wires, and wiring assemblies against corrosion. It creates a permanent flame-retardant barrier that can prevent corrosion-associated failures by uniformly filling all gaps and pores in electronic connectors and associated wiring. Cured by heat at temperatures below thresholds of sensitive components, it is irreversibly cross-linked and will not reliquify, melt, or burn.