... , for making Air Filters in different shapes. "Fleetguard Equiped" ! PU-20F Full-automatic PU Seal casting machine, for filter elementConsists:1, Bucket ... filter, and also can achieve to make special shape PU-Seal Air Filters.6, Change a bench, can make circular shape ... PU-Seal Air Filters.Applications:Mainly used to pour PU for auto Air Filter and industrial filter ...