Rubber, raw or semi-worked; rubber compounds, namely, raw rubber mixed with chemical substances to increase the potential and performance of the rubber; rubber for use in manufacture of rubber, raw or semi-worked; synthetic rubber for use in manufacture of rubber, raw or semi-worked; semi-worked rubber; rubber solutions; waterproof gaskets made of rubber; gaskets for industrial use; gasket material, namely, sheets of graphite-based material for use as gaskets; gaskets made of rubber; non-meta...