... the original design of the vickers vane pump , four series : 20VQ/25VQ/35VQ/45VQModel Code (F3-) XC-25V ... (Q)-5-RRefit cartridge kits mark Series Geometric displacement Rotation F3-Viton seals Omit-if not ... )42,45,50,57,60,66,75Shape Dimensions Series A BCD EF G HKGasket O-Ring 20V( ... .571×3.55 SeriesInner spline dentiform parameter of rotor Modulus Number of teech Pressure angle Major diameter ...