Profile: Mason Plastics Co. specializes in conveyor components & plastics such as conveyor rollers including custom rollers, sleeve bearings, stub shafts, roll end bearings, ABS end plugs & combiner rollers, brackets including clamping collars, swivel caps, cross blocks, spacers, protective caps, knobs & adjusting rods, leveling components including threaded tube ends, threaded rods, adjustable levelers, level-lock levelers & solid levelers and precision machining services.