Plastic Ball is  a cost-effective substitute for metallic balls in low load bearings. They have excellent chemical resistance and low density, as well as the highest melting point of the volume thermoplastics. high tensile strength  excellent electrical insulator, with low dielectric constant and loss factors. plastic balls are highly resistant to acids, alkalis, alcohols and Many inorganic chemicals, and are non-toxicThey are used as agitators in aerosol spray cans, lightweight check valves, medical diagnostics and a wide variety of other applications.