quantity of the surfactant is above 15 parts the transparency and or water resistance of the cured film is impaired and the curing property also deteriorates each of the organopolysiloxane compositions to be used in the present invention comprises the above mentioned components more specifically the compositions may consist essentially of these components and may also contain in addition thereto a variety of auxiliary components such as for example dispersion media stabilizers thixotropic agents coloring agents fillers compatible polymers when organic solvents are used to prepare solutions or dispersions ethanol is preferred from the viewpoint of safety and hygiene if circumstances permit however other alcohols and especially lower alcohols such as methanol propanol and butanol or other organic solvents having the desired dissolving ability can be used the coating of glass vessels with such organopolysiloxane compositions can be carried out by any appropriate conventional method such as for example the dipping method spraying method brushing method flow coater method or transfer coating method the composition is generally put on the scuffed parts but the coating area is not restricted to only the scuffed parts after the coating the coated glass vessels are allowed to stand at room temperature for a period of the order of 0 5 to 5 hours whereupon cured films having no surface tackiness are formed on the glass vessels it is permissible however to heat the coated vessels in order for example to shorten the curing time and to remove.