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PP plastic balls, also call Polypropylene plastic balls, they have good solvent resistance, oil resistance, resistance to weak acid, resistance to weak alkali, high resistance to creep and stress ability. And they have excellent wear resistance, self-lubrication, and fatigue durability. Others characteristic of PP plastic ball is low relative density or specific gravity small, non-toxic, insulation, resistance to corrosion. Using the temperature is between 25 to + 120 degrees.
PP plastic ball material property table, the density is 0.91, 90 hardness, wear-resisting coefficient of 385-560, bibulous rate is 0.03, thermal deformation temperature of 120.