S 712 [BS] - FIRE-RETARDING CLOSING PROFILES The use of newly developed self-extinguishing TPE (Thermoplastic Elastomer) makes DEVENTER profiles highly suitable for smoke and fire resistant constructions. The fire retardant DEVENTER seals have a burning rate of 0mm/min and thus do not contribute to fire propagation. DEVENTER sealing profiles coded S, SV and DS also meet the requirements for smoke density according to EN 1634-3. DEVENTER fire-retardant profiles have been tested according to the test method EN ISO11925-2 by the Institut für Fenstertechnik Rosenheim and are classified according to the standard EN13501-1:2007. All DEVENTER fire-retardant profiles, including the silicone profiles (DS), comfortably meet the bandwidth of Class E.