Cap Sealant Performance  (1) Water Prevention Test Sample 1 2 3  Sealant 0.93x10-9  0 1.11x10-9  Without Sealant 4.96x10-9  3.88x10-9  5.88x10-9  Coefficient(cm/second)       Cap Sealant Treatment       (2) Reciprocate Movement Test JIS K7204 loading 1000gf﹛9.8N｝ 500 rotate H-22 ( Building Materials Test Centre) Sample Cap Sealant applied    Without Sealant Reduction in thickness ( mm ) 1 2 3 Average 1 2 3 Average 0.24 0.26 0.26 0.25 0.62 0.50 0.54 0.55 Reduction in quality ( g ) 1 2 3 Average 1 2 3 Average 1.48 1.52 1.47 1.49 2.70 2.54 2.80 2.68     (3) Hardness Test         Sample Without Sealant Cap Sealant applied Reference Mohs Scale( Hardness) 3.3 5.2 Low-speed / colored brick 4.5-5  Quartz glass 6 Hardness of Pencil 4 11≦ ---