Industrial 637375-AA Repair Kit

637375-AA Fluid End Repair Kit is an original-equipment maintenance kit from ARO (Ingersoll Rand) designed to service the fluid end of air-operated double-diaphragm pumps. Marketed as the 637375-AA Fluid End/Fluid Section Service Kit, it includes Santoprene ball and Santoprene diaphragm components that replace worn elastomeric parts to restore sealing and pumping performance. This Santoprene-based kit is listed in major catalogs as the 637375-AA EXP Pump Repair Kit, confirming its use with EXP-series ARO pumps that require this part number. Industry distributors and catalog pages, including Grainger, Zoro, and Newegg, identify 637375-AA as a Santoprene-based fluid-end repair kit for ARO pumps, affirming its compatibility with the 637375-AA specification. Official documentation such as ARO operator manuals reference Fluid Section Service Kit 637375-AA and label it as the fluid-end repair kit for this configuration. Designed for maintenance of ARO double-diaphragm pumps, this kit provides the Santoprene ball and diaphragm components essential to restoring proper flow and suction in the fluid end.