Winches, leaf springs, gears, fishing reels, steel cables, sheaves and pulleys. Used as a long term rust protection for gear stored outside on farms, in mining and steel works or concrete plants, it is brushed, rolled or sprayed on (at 80psi) to cover about 40 smtr/ltr. It can be used to water proof electronics and electrics, especially those which get exposed to salt water, sulphur or methane.