Rust Preventive Sprays

Select your rust prevention by formulation

Rust Prevention from Slide Products

Prevent rust with a protective film with Slide's rust preventative products include aerosol sprays and liquids. Slide stops rust and provides protection overnight, during short shutdowns and while in long-term storage. Slide's anti-rust oil-based aerosols and liquid compounds are great at stopping rust and are available in NSF registered formulations. Other rust preventatives include indicator dyes to make it easier to see where you have protection against rust, and where your steel mold us unprotected. Dry formulations will not bleed out and mark parts.


When your production run is done, as the mold is cooling, apply rust prevention spray to the mold cavity, the plates and mold base to help prevent condensation from causing rust and oxidation. This is a “dirty” step since the hot mold will likely cause the oils in a rust preventive to liquefy and run. It still protects the mold until it is cool enough to pull and take it to the tool room to break it down.

Now that you are in the tool room, break down the entire mold system to look for gas buildup, color stains, water stains, resinous deposits and any other contamination that might have built up on the mold unit during the production run. Use a solvent-based mold cleaner and/or mold polish to remove these contaminants and degrease the metal mold and give you a clean mold that is immediately ready to make parts when it comes out of storage.

Now protect the mold with a long-term rust preventive that is rated for the length of time you need protection while the mold is in storage. The American Society for Testing and Materials (ASTM) testing method for rust prevention designates a long-term rust preventive as being effective for up to 5 years of indoor storage. If you are storing a mold longer than 6 months, we recommend that the entire mold block (cavity as well as mold base) be protected with an oil-based rust preventive.

It is also best practice to crack open and inspect any mold stored for longer than 12 months, looking for any signs of corrosion. You should reapply a rust prevention product following these inspections to ensure all critical surfaces are protected.

Has your mold been running PVC or any other gas-emitting resin? Be sure to use a rust prevention product with protection against not only corrosion due to moisture, but also oxidation caused by the presence of the acidic vapors released by these resins. To ensure your mold has continuous protection you should reapply this rust preventive every 30 days to ensure that the acids present in the area around the mold continue to be neutralized.

Mold Shield Rust Preventive Spray (No. 42910P)

Unique "dry" formula

2-year protection

Will not bleed out and mark parts

No-Rust Rust Preventive Spray (No. 40212M)

5 year protection

Displaces moisture while sealing mold from outside condensation

Non-silicone, non-wax formulation

Quick RP Rust Preventive with Red Indicator Dye (No. 42810RP)

Red tracing dye helps ensure complete coverage

2-year protection

Will not bleed out and mark parts

Acid Vapor Neutralizer Rust Preventive (No. 44011P)

Protects a mold when molding PVC and flame-retardant resins

Provides dual protection against moisture and hydrochloric acids

White Rhino Rust Preventive (No. 46710P)

Ideal for mold assemblies used to produce food packaging

NSF category H1

2-year protection