Nitro Stan Spot and Glazing Putty, Red. This nitrocellulose based formula has been used since the 1930's.  It is still being used today because of its easy spreading, fast drying and excellent sanding properties. It fills and hides surface blemishes, imperfections, and irregularities that are difficult to hide with primer. Spot and Glazing putty can be used to repair scratches, nicks, surface rust, small holes and tears, rustouts and dents. Spot and Glazing putty can be used to repair scratches, nicks, surface rust, small holes and tears, rustouts and dents. 9001