... in material POM ( Delrin),PP, HDPE,PS,.. Material: POM(Delrin),NYLON,ABS,AS,PP,PE,PVC,PS,PC, TEFLON.....Size: 2.38mm~50 ... is not recommended for use with acids and alkalis. PVC Balls .PVC is the most widely used member of the vinyl family ... . It is most commonly used in pipe and fittings. PVC offers excellent corrosion and weather resistance. It has a high ...