Arkema's wide range of cutting edge Rilsan® polymers (PA11, PPA) are suitable for the latest anti-pollution circuits with very severe chemical resistance requirements such as engine crankcase ventilation (blow-by), selective catalyst reduction (SCR), low-pressure EGR applications, Secondary Air Injections (SAI), and Exhaust Heat Recovery Systems (EHRS) even up to high temperatures (180°C). Kepstan® PEKK ultra performance polymers for extremely demanding applications.