The invention relates to a high temperature-resistant stratified composite which comprises a coated base material (3), preferably a metal, at least one first layer (1) made of a fluorinated thermoplastic material which is applied directly or indirectly to the base material (3), and at least one second layer (2) made of a fluorinated thermoplastic material which is applied directly or indirectly to the first layer (1). In order to reduce the permeability to aggressive chemical media, the first layer (1) is composed of a mixture of perfluoroalcoxy (PFA) and fluorinated ethylene propylene (FEP), containing 20 to 80 wt % PFA and 80 to 20 wt % FEP, whereby said mixture is mainly composed of PFA and FEP and contains only negligible impurities, and the second layer (2) is composed of FEP.