"NSN IS USED TO PURCHASE A MINIMUM OF 1 CONTAINER TO A MAXIMUM OF 19 CONTAINERS;AL O 40TI O,SPHEROIDAL,SPRAY DRIED;RC 61HARDNESS;-45 +5 UM (-325 MESH +5 UM);TEXTURE/FINISH AS SPRAYED 100-400,BRUSHED 80-320,GROUND 5-15,LAPPED 1-3;COATING NUMBERS P131VF-10,P131VF-11,P131VF-12,P131VF-13 AND P131VF-15;VERY FINE GRADE OF ALUMINUM OXIDE-TITANIUM DIOXIDE COMPOSITE.PRODUCES THIN,HARD,DENSE,EASILY FINISHED HARD BEARING COATINGS HAVING RESISTANCE TO LOW-TEMPREATURE (1020DEG F),WEAR BY ABRASIVE GRAINS,HARD SURFACES,FRETTING AND PARTICLE EROSION.HIGH RESISTANCE TO WETTING BY LIQUIDS.RESISTANCE TO DILUTE SOLUTIONS OF MOST COMMON ACIDS.BEST POLISHED FINISH OF THE METCO OXIDE CERAMICS"