Rust remover sprays use several effects simultaneously to reduce the tightening of connections caused by rust (iron oxide) on metal surfaces:
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Contains finely structured solvent liquids
The spray penetrates through very small gaps between screw threads or stuck parts. This is called the "capillary effect." -
Loosens the rust layer
The chemicals inside weaken the structure of the rust or reduce the bond between the rust and the metal. This makes the jammed bolt, nut, or hinge move more easily. -
Provides lubrication
Lubricants in the spray reduce friction. This makes it easier for parts to turn or separate. -
Displaces moisture
Many rust removers repel water. This slows down the formation of new rust.
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