0201-520 Repair Parts, Lutz B2 Vario Polypropylene Laboratory Drum Pump Tube with High Volume Rotor, Exploded View Part Breakdown Diagram. PP 32-R SL NM 500 PDF Manual. Replacement Outer & Inner Tube, Bushing, Shaft, Pump Foot, Hose Connector, Ring. Wingnut, Seal, O-Ring, Gasket, Ball Bearing, Outrun Piece. Housing, Shaft Guide, Diffusor, Coupling Cross.