Techtron® PSGF Polyphenylene Sulfide PPS shapes are compression molded and glass filled, giving them extreme dimensional stability as well as improved chemical and corrosion resistance over unfilled PPS materials. Due to these improved performance characteristics, Techtron® PSGF is often chosen as a solution for applications involving critical sealing and structural components, such as pump housings, valves, and compressors within the oil and gas industry.