... , Aqueducts, Large Reservoirs Main performance index:NO.ItemIndexBSJ1Hardness, Shore A60±560±560±52 Tensile Strength, Mpa ≥ 1512103 ... 3025256 Brittleness temperature ≤-45-40-407Air aging70°C×168hHardness, Shore A88—Tensile Strength, Mpa≥1210—Break & elongation,%≥ — ... 100°C×168hHardness, Shore A——8Tensile Strength, Mpa≥——9Break & elongation,%≥——2508Ozone aging 50pphm ...