In our new process variant of the hard anodic layers HART-COAT® and HART-COAT®-GL, a subsequent sealing is applied in order to specifically create additional functional properties. In contrast to our variants HC-Plus and HC-Plus 2, this new sealing does not contain any per- and polyfluorinated alkyl compounds - is therefore 100% PFAS-free - and at the same time offers further advantages compared to the previous solution.