Product name: Silicon rubber Item NE-130 NE-140 NE-150 NE-160 NE-170 NE-180 Appearance Milky-white,slightly transparent,no obvious extraneous matter Density g/cm3 1.08±0.05 1.13±0.05 1.15±0.05 1.19±0.05 1.22±0.05 1.25±0.05 Hardness Shore A Points 30±2 40±2 50±2 60±2 70±2 80±2 Tensile Strength MPa≥ 6.0 6.5 8.0 8.0 7.5 7.0 Elongation at Break % ≥ 600 400 350 300 220 160 Tension Set % ≤ 6 6 7 7 6 5 Tear Strength kN/m ≥ 15 19 22 22 20 18 First vulcanization condition for test piece: 175℃×5min Vulcanizator: 80% DMDBH,quantity added 0.65%