... gasket, petroleum pipeline, insulator, tablet powde fumed silica LM-200 White carbon black 1. Characteristic: It is a white and colloidal micro-particle ... in ambient temperature (low water content), silicone neutral rubber.A-200: used widely in sealing ring, sealing gasket, petroleum pipeline, insulator ... humid, water, pressure and throwing during transport fumed silica LM-200 White carbon black