huile d'ester à base de polyol

CONT: Polyolester Lubricant (POE): Also sometimes called ester oil. A family of synthetic refrigeration lubricants, generally used with non-chlorine containing refrigerants. These lubricants have an oxygen containing chemical group called an ester. [They] are generally compatible with existing mineral oils, and system components. Ester oils are slightly hygroscopic and should be stored in well sealed, non-porous containers.