Polyester material (Best one)
Density: 1.25g/ cm3
Hardness: Shore 85A~90A (adjustable)
Tensile strength: 53Mpa
Elongation: 557%
Permanent set: 34 % (70°C, 22 hours)
Cloning abrasion: 0.019 cm3/1.61km
Temperature: -40°~ 60°
Bearing capacity: 10.5Mpa (compress about 25%)
Polyether material ( better one)
Density: 1.15g/ cm3
Hardness: Shore 85A (adjustable)
Tensile strength: 30 Mpa
Tear strength: 70KN/m
Elongation: 445%
Abrasion Loss:0.029cm³/1.61km
Compressive strength: 6Mpa