When it comes to plumber's putty, we wrote the book on it. That's why professional plumbers count on Oatey and Hercules - the only makers of true stain-free putty. Our unique, professional grade non-staining plumber's putty is safe for most types of plumbing fixtures and surfaces. Unlike all other plumber's putty, we make oil-free putty that can be used without pre-treatment. This includes natural, porous surfaces such as stone, marble, granite, plastics, rubber, and fiberglass, as well as grout and on manufactured sinks, shower bases, countertops, and other surfaces.