OEM vs. Aftermarket Progressing Cavity Pump Parts: A Practical Comparison for Industrial Efficiency
In industries where fluid handling is mission-critical—such as wastewater treatment, oil and gas, food processing , and mining —the performance and longevity of progressing cavity (PC) pumps directly impact operational efficiency. Pumps from brands like Moyno® , Seepex®, and Netzsch® are known for quality, but when it comes to sourcing replacement parts, many professionals are now weighing the cost, speed, and reliability of aftermarket components over OEM originals. Key Components of a Progressing Cavity Pump Progressing cavity pumps rely on a helical rotor rotating within a rubber stator to move fluid consistently and gently. Core wear components include: Rotors – Often chrome-plated or hardened for abrasion resistance Stators – Made from chemical-resistant elastomers like NBR, EPDM, or HNBR Drive components – Including shafts, couplings, and seals Because these parts experience constant wear, efficient and economical replacement is essential. The Value of Aft...