Permatex Prussian Blue Fitting Compound aids precision-fitting of machined surfaces and locates high spots on bearings, valves, gears and other close-to-tolerance components. Non-drying, with easy clean-up.About this itemFeaturesAids precision-fitting of machined surfacesNon-dryingLocates high spots on bearings, valves, gearsEasy clean-upSuggested Applications: Bearings, valves, gears, other close tolerance or machined assemblies