RubberON Industries produce ultra-fine hi structure crumb of 30,40,60, 80 100 mesh from Only nylon Trucks and Buses tyres. During the compounding, the rubber penetrates into these hi structure particles and a strong mechanical bond is created.When mixed in a rubber compound, this crumb becomes one with it and imparts high properties. It was also found that by using 10 phr of 80/ 100 mesh crumbs, no loss of properties was observed, even though the carbon phr had to be reduced to maintain the hardness, thus affecting cost reduction without impairing properties.