... .tensile strength:10-18mpa 3.hardness:60-70A 4.abrasion:300mm3 5.elongation:300% rubber transmission beltusage:widely ... longitudinal elongation at break of not less than 10% of the entire thickness of the vertical reference ... life of a conveyor belt and the smooth transmission lines running smoothly. Conveyor belt method of connector ... , NN300, NN350, NN400, NN450, NN500, etc. rubber transmission belt