RD-90 provides a fine film coating that keeps moving parts and operating mechanisms running smoothly while it displaces moisture and prevents rust on any metal. This product contains no silicone and is harmless to paint, plastic, rubber and fabric. Spray on corroded and rusted “frozen” parts for quick release. Use on any metal item where lubrication, rust or corrosion protection, is needed. Apply to metal hardware, hinges, locks, tools in the shop or home, sporting goods and household items.