... ,good sealing property Product features:1, high mechanical strength 2, good heat and cold resistance (-70 to 260) 3 ... , insulative & di-electric properties. Dielectric constant 3-3.2 breaking down voltage: 20-50KV/MM; 6, Non-toxic, environmentally ... wide range of industries applications ,civil construction & transportation vehicles 2,joint expansion, heat pneumatics tube in the electricity, chemical, ...