... ). Metal Cascade-mini Ring(7). Metal Conjugate Ring P.S. Metal availabe in Materials: S.S.302, 304, 316, 316L, 317, 317L, carbon steel ... Heilex Ring (7). Plastic Conjugate Ring (8). Polyhedral Hollow Ball P.S. Plastic Series availabe in Materials: PE,PP,RPP,PVC,CPVC ...