cascade ring, plastic cascade ring,pp cascade ring, plastic tower packing, plastic random packing, cpvc cascade ring Plastic Cascade Mini Ring is made from heat resistant and chemical corrosion resistant plastics, including polyethylene (PE), polypropylene (PP), reinforced polypropylene (RPP), polyvinyl chloride (PVC), chloridized polyvinyl chloride (CPVC) and polyvinylidene fluoride (PVDF). It ...