Removes rust from metal surfaces and removes bluing from surfaces such as guns, reels, etc. Remove loose scale with coarse sandpaper or wire brush. Apply Naval Jelly liberally to rusty surface that is free of dirt, oil and grease. Wipe off immediately from painted surfaces. Allow to work for 15 to 30 minutes and rinse off. Repeat application on heavily corroded surfaces. Limit application time to 5 minutes when used on chrome or other plated surfaces.