ESSD Filter Drier series are hermetic Filter Drier in compacted bead style for use on liquid line. These Filter Driers consist of ? Molecular Sieve and Activated Alumina for maximum moisture and acid removal capability. They are optimized for HFC refrigerants and with POE and PAG oils. Properties: – ESSD series have 45° flare type connection, – Extremely high water adsorption capacity compared.