1. Diameter : 2 - 15mm 2. Material:POM(Delrin),NYLON,ABS,AS,PP,PE,PVC,PS,PC, TEFLON... 3. We are factory 4. High ... .Nylon Balls (Zytel®, Polymide,PA)is used in check valves, light load bearings, knobs and toggle switches and other applications where ... may be used to temperatures of 140°F (60° C). plastic toy ball ( SGS approved )