Loctite-SF-7500-Frameto-Can-Loctite-303403-p-Loctite-SF-7500-is-a-blue-blue-green-solvent-free-non-toxic-aqueous-liquid-which-dries-at-room-temperature-It-converts-rust-into-a-black-stable-matt-black-complex-&-forms-a-protective-coating-on-exposed-iron-&-steel-surfaces-&-also-creates-a-suitable-primer-for-most-types-of-paint-Suitable-for-metal-pipes-fittings-storage-tanks-railings-conveyors-overhead-cranes-booms-&-agricultural-equipment-p-Loctite-303403-SF-7500-Frameto