It is most often used to prevent rust.

The latter had a decorative fluted design and were painted black to prevent rust.

Then you oil every piece thoroughly to prevent rust.

The casks are filled with inert gas to prevent rust.

And the black steel hanging basket is dipped in vinyl to prevent rust.

All blued parts still need to be properly oiled to prevent rust.

How knowledgeable are you when it comes to preventing automotive rust?

"I cannot say that the old oil would not have prevented rust."

They say the spent fuel should be canned or encased some other way and stored out of water, to prevent rust.

Wax can be applied normally, making sure the steel edges are well covered to prevent rust.