Goulds Pump 28SHFRM3A5 Parts Breakdown, Exploded View Diagram & M Group 316 Stainless Steel Centrifugal Pumps Repair Parts PDF Manual. Replacement Casing, Impeller, Wear Rings, Seal Housing, Shaft Sleeve, Impeller Key, Impeller Stud, Impeller Washer, Motor Adapter, Casing Bolt, Adapter Bolt, Mechanical Seal, Seal Spring Retainer, Vent and Drain Plug & O-Rings Available Now.