The interior of a progressive cavity pump will almost always be outfitted with both a twin helix and a helical rotor. This is because of the unique way in which the pump works. This particular configuration is referred to as a helical twin helix, which is the name given to it. Even when the pump is operating, the rotor will not move from its position because it has been hermetically sealed in place against the pump stators. As a consequence of this, the sizes of these cavities are very specific. It is important to keep in mind that the cavity sizes are determined by rotating the pump while the calculations are being done because this is how they are found. If these pumps are used to move the material, regardless of the nature of the substance, the cavities in which it was stored will contain traces of the material that it moved. This is the case even if the material was stored elsewhere. In almost all cases, the fabrication of pump stators involves the process of custom molding so that they can have an appropriate fit within the pumps. This ensures that the pumps continue to function properly. This ensures that the pumps will continue to function in the prescribed manner as long as this procedure is followed. You have the choice of purchasing these components in either a single-part or a two-part configuration, and the specifics of what it is that you require will influence which option you go with. You have the ability to take either one of these two different courses of action. At the very end of the process of assembly, a tamper-proof seal is placed on both ends of the stators to ensure that they do not become damaged in any way while they are being transported or stored.