... diameters in material POM ( Delrin),PP, HDPE,PS,.. Material: POM(Delrin),NYLON,ABS,AS,PP,PE,PVC,PS,PC, TEFLON.....Size ... bearings, rollers, valves and electronic components, sailing boat fittings. Polytetrafluorethylene Balls (Teflon®) Teflon are a well-known non-friction ... the vinyl family. It is most commonly used in pipe and fittings. PVC offers excellent corrosion and weather resistance. It has ...