Description: Bearings being mechanical components of machines, machine tools, motors and engines except for land vehicles, machine coupling and transmissions except for land vehicles; bearings made of plastic material and components which are subjected to sliding or rubbing force of a mechanical nature, namely, bushings, bearings and gearings being mechanical components of machines, machine tools, motors and engines except for land vehicles, machine coupling and transmissions except for land vehicles; bushings and gearings being mechanical components of machines, machine tools, motors and engines except for land vehicles, machine coupling and transmissions except for land vehicles; valves being mechanical components of machines, machine tools, motors and engines except for land vehicles, machine coupling and transmission except for land vehicles; non-return valves of plastic being mechanical components of machines, machine tools, motors and engines except for land vehicles, machine coupling and transmissions except for land vehicles; stop valves of plastic being mechanical components of machines, machine tools, motors and engines except for land vehicles, machine coupling and transmissions except for land vehicles; valve seats being mechanical components of machines, machine tools, motors and engines except for land vehicles, machine coupling and transmissions except for land vehicles; valve inserts being mechanical components of machines, machine tools, motors and engines except for land vehicles, machine coupling and transmission except for land vehicles; bearing inserts being mechanical components of machines, machine tools, motors and engines except for land vehicles, machine coupling and transmissions except for land vehicles
