OXIDE CERAMIC BASED PRE-IMPREGNATED (PREPREG) MATERIAL. THE PRODUCT IS REINFORCED WITH CERAMIC FABRIC AND ENGINEERED FOR HIGH-TEMPERATURE APPLICATIONS OF UP TO 1800 DEGREES FAHRENHEIT (982 DEGREES CENTIGRADE). THE CERAMIC COMPOSITE IS IMPREGNATED WITH SLURRY COMPRISED OF WATER, DISTILLED WATER, DEIONIZED WATER, ALUMINIUM OXIDE (POWDERS), SILICON DIOXIDE, PROPYLENE GLYCOL AND GLYCERIN. AS PART OF THE MANUFACTURING PROCESS IT IS CURED AT CONVENTIONAL TEMPERATURES FOLLOWED BY A FURNACE CYCLE OF UP TO 2000 DEGREES FAHRENHEIT (1093 DEGREES CENTIGRADE). THE PRODUCT IS THEN WOUND ON A ROLL AND PIECES ARE CUT, STACKED, CURED OR FIRED LEAVING A SEMI RIGID "GREEN STATE" PART WHERE THE POWDER PARTICLES ARE FUSED TOGETHER TO FORM A SOLIDIFIED COMPOSITE. THE FINISHED PRODUCT IS USED TO MAKE PARTS FOR TURBOJET ENGINES, COMPOSITE STRUCTURES AND CONTOURED PARTS WHERE EXTREME HEAT RESISTANCE AND MANAGEMENT IS REQUIRED. PRESENTED AS A CERAMIC ROLL, LENGTH IS 23 METRES WITH A WIDTH OF 36 INCHES AND CONTAINS, BY WEIGHT, 45% OR MORE OF ALUMINA (AL2O3). THE WEAVE OF THE FABRIC IS 8 HARNESS SATIN STYLE, 1500 DENIER ROVINGS.

CLASSIFICATION HAS BEEN DETERMINED IN ACCORDANCE WITH THE FOLLOWING:- GENERAL INTERPRETATIVE RULES (GIR)S: GIR 1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING 6903: OTHER REFRACTORY CERAMIC GOODS (FOR EXAMPLE, RETORTS, CRUCIBLES, MUFFLES, NOZZLES, PLUGS, SUPPORTS, CUPELS, TUBES, PIPES, SHEATHS AND RODS), OTHER THAN THOSE OF SILICEOUS FOSSIL MEALS OR OF SIMILAR SILICEOUS EARTHS GIR 6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL 690320: CONTAINING, BY WEIGHT, MORE THAN 50% OF ALUMINA (AL2O3) OR OF A MIXTURE OR COMPOUND OF ALUMINA AND OF SILICA (SIO2) CN CODE 69032090: CONTAINING, BY WEIGHT, 45% OR MORE OF ALUMINA (AL2O3) ALSO CLASSIFIED IN ACCORDANCE WITH: CHAPTER 69 NOTE 1 HARMONISED SYSTEM EXPLANATORY NOTES (HSEN) CHAPTER 69 NOTE (iv) COMBINED NOMENCLATURE EXPLANATORY NOTES (CNEN) HEADING 6903 WORLD CUSTOMS ORGANISATION (WCO) 6903.20