Prolon is an established ISO 9001:2015 registered manufacturer of Virgin PTFE and engineered plastics, CNC turned and pressure molded, custom round components. We offer a full range of filled PTFE materials as well as other engineered plastics including Acetal, PEEK, Polyimide, and more. We specialize in the manufacture of custom round components with outer dimensions up to 6 inches. Our customers needs vary and include ball seats, O-rings, envelope gaskets, wiper seals, backup rings, bearings and many other custom parts.