... and longer rubber life OEM interchangeable Bonded Piston for Mud Pump PISTON ASSEMBLY For Triplex and Duplex mud Pumps Piston cores are made of normalized ... , DB-550, DA-700, FA-1600/1300, FC-2200, D-300/500, D-375, D-700, Ideco: T-500, T-800, T-1000 ...