PPS dust filter bag (polyphenylene sulfide) -Normal maximum continuous operating temperature is160degrees. Common applications include: coal-fired boilers, incinerators, fluidized bed systems, cement mills, oil and gas firings, asphalt plants and pulverized coal injection systems. Ryton has excellent resistance to both acids and alkalis. The media also has the ability to operate effectively on applications with O₂ content up to 9%. Ryton works well in high moisture content applications and where dew point crossings are common. This media is suited for applications where emissions standards are tight.