The SPX Flow APV M03SS408286 Rotary Lobe Pump Rotor Fin Insert is a 316 stainless steel rotor fin designed for rotary lobe pump rotors with a 21 mm square bore, part number M03SS408286. It is intended to replace worn rotor fins to preserve rotor geometry and pumping performance in APV/SPX lobe pump assemblies. As part of the M03SS rotor fin family, this insert delivers corrosion resistance in demanding process environments while maintaining compatibility with 21 mm square-bore rotors.
