Back stick rubber waterstop is made from natural rubber or synthetic rubber, adding various additives and fillers, through the process of plasticizing, mixing, pressing, forming. One side of product is flat, the other side has stems or bulb. It has many species, such as bridge type, mountain type, P type, U type, Z type, T type, H type, E type, Q type, etc. It also can be divided into EB type and EP type. The product utilizes rubber's high elasticity and can arise elastic deformation under various load, thereby achieving the effect of preventing water seepage and leakage, absorb shock. It mainly used in construction joints, settlement joints and movement joints of foundation engineering, underground facilities, tunnel, culvert, aqueduct, dam, etc, to ensure the life of project. Specification Material: rubber. Species: EP type (without center bulb), EB type (with center bulb). Length, width and thickness can be customized. Due to stem has many species, customers should provide drawing. Back Stick Rubber Waterstop Properties Number Item Index B S J 1 Hardness (shore A) 60±5 60±5 60±5 2 Tensile Strength (MPa) ≥ 15 12 10 3 Elongation at Break % ≥ 380 380 380 4 Compression Set 70°C × 24 h % ≤ 35 35 35 23°C × 168 h % ≤ 20 20 20 5 Tearing Strength KN/m 30 25 25 6 Brittleness Temperature °C ≤ -45 -40 -40 7 Hot Air Aging 70°C × 168 h Hardness (shore A) ≤ +8 +8 - Tensile Strength (MPa) ≥ 12 10 - Elongation at Break % ≥ 300 300 - 100°C × 168 h Hardness (shore A) ≤ - - +8 Tensile Strength (MPa) ≥ - - 9 Elongation at Break % ≥ - - 250 8 Ozone aging 50 pphm: 20%, 48 h Grade 2 Grade 2 Grade 0 Note: If there are other requirements, inspection items can be appropriately added according to buyer and seller. If evaluating mold test in line with users, its anti-mold property should be equal to or above Grade 2. Feature Adapt the deformation of concrete. High elasticity and tensile strength. Can arise compression deformation under various loads. Resistant to wear, aging, rust, corrosion. Good waterproof performance. Easy to install. Long life. Application Back stick rubber waterstop is used in construction joints, settlement joints and movement joints to prevent water leakage and seepage, absorb shock, ensure the life of project. The structures include underground project, dam, cistern, swimming pool, roof, reservoir, culvert, tunnel, aqueduct, basement, artificial lake, sewage treatment plant, etc.