All ICE engines are equipped with a system of Positive Crankcase Ventilation (PCV) aiming at flowing the "blow-by" gases back to the combustion chamber. PCV tubes are thus exposed to hot and chemically aggressive conditions. Increasingly stringent environmental regulations have cause the automotive industry to move away from bulky, heavy and expensive rubber hoses towards thinner, lighter and lower cost plastic tubes to produce higher performance PCV lines with larger internal diameters. Rilsan^® PA11 is one of the main solutions on the market.

• Industry: Automotive 
• Application: Positive Crankcase Ventilation (PCV) lines of most modern gasoline engines
• Objective: A PCV tube is a high performance system that needs to resist temperatures up to 225°C, and extremely aggressive chemicals, such as biofuels, acids and oils. As tube length and diameter increase, so does the need for lighter but still flexible and competitive solutions to replace traditional rubber (HNBR, AEM or FKM) or low performing plastics (PP, PA6, TPC-ET, etc.) solutions. 
• Partner: One of the biggest US OEMs and its main innovative tier for PCV application
• Material: Rilsan® polyamide 11 & Rilsan® HT polyphthalamide (PPA)