Polyurethane enamel
A hard, chemically resistant finish used on aircraft. Polyurethane enamel is resistant to damage from all types of hydraulic fluid.
Aviation Maintenance Technician Handbook — Airframe, p. G-26
A hard, chemically resistant finish used on aircraft. Polyurethane enamel is resistant to damage from all types of hydraulic fluid.
Aviation Maintenance Technician Handbook — Airframe, p. G-26