"NSN IS USED TO PURCHASE A MINIMUM OF 1 CONTAINER TO A MAXIMUM OF 7 CONTAINERS;-45+15 UM (-325 MESH +15UM);RC 40-60 HARDNESS;CERTIFICATION ALLISON EMS 56758,CPW 210,MSRR 9507/9,PWA 1310 AND SNECMA DMR 33.080;DENSE COATINGS WHICH RESIST WEAR BY FIBERS AND THREADS AND ALSO RESIST EROSION IN HIGH TEMPERATURES RANGES OF 1550-3000DEG (F)"