Hand Tools Carborundum Paste Carborundum Paste. 614203 CARBORUNDUM PASTE GRIT#1500, MICRO FINE 450GRM. IMPA Code: 614203. UOM: TIN. MTML UOM: TN. For precision lapping, fitting, surfacing, polishing and other general use in machine shops. Universally used for grinding valves. Supplied in 450 grm tin. Please specify grit number …