rustless

Rustless, life-born, living-tissued old wood: rustless as flesh is rustless, and happy-seeming as iron never can be.

For they contain rustless iron, and where iron does not rust man cannot live, nor can any other animal or any plant.

The sights of his rifle showed clean as the rustless barrel rested on a log.

It should be suspended by rustless black chains and eyebolts passing through the lower rails.

That is to say, it must be unkinked, rustless, and unscored.