Polyurethane varnish. Wide temperature range. With UV tracer. High chemical resistance. Can be used from -40 °C to +120 °C. Visual inspection of surface coverage. URETHAN 71 - the chemically cross-linked polyurethane-based protective varnish. After curing, the transparent insulating varnish has a high chemical resistance to solvents and aggressive vapors and protects circuit boards and surfaces even under extreme conditions.