K7 Type : K7 Product Name : T-pack Ring Type K7 Physical Characteristics 8x6 表格 Size(mm) Surface Area (m^2/m^3) Void Volume% Packing Number (pieces/m^3) Packing Density (kg/m^3) Dry Packing Factor (m^-1) 25 85 90 81200 81 28 50 48 93 11500 62 16 95 38 95 1800 45 12 ※Under conditions of “Random dumping”. for Plastic material.