PBT (polybutylene terephthalate) is a strong and stiff engineering plastic with excellent machining characteristics, chemical resistance, and bearing and wear properties. It is often used for food processing machinery applications when low moisture absorption, resistance to staining, or resistance to cleaning chemicals is required. PBT is ideal for applications such as cams, bearings, gears, food pistons, wear strips, scraper blades, valve bodies and conveyor components.