Best Rust Spray In July 2025

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Looking for some of the Best Rust Spray? As you may know, there are dozens of similar products out there and some come with vastly different price tags. Let us help you out here – we have handpicked for you the Best Rust Spray.

To help you in your search, we have completed this list of the Best Rust Spray.

Top Rated Best Rust Spray Of 2025

Rank	Product Name	Score
1	Rust-Oleum 248656 Professional Grade Rubberized Undercoating Spray, 15 oz, Black Buy Now	9.7 Buy Now
2	Rust-Oleum 215215 Stops Rust Rust Reformer Rust Reformer 10.25-Ounce Spray-Color Black Buy Now	9.5 Buy Now
3	KRUD KUTTER MR32 The Must For Rust, 32-Ounce Trigger Spray Buy Now	9.1 Buy Now
4	Rust-Oleum Automotive 248658 10.25-Ounce Rust Reformer Spray, Black Buy Now	8.8 Buy Now
5	WD40 300035 Specialist Corrosion Inhibitor Spray - 6.5 oz Buy Now	8.6 Buy Now
6	Permatex 81849 Rust Treatment, 10.25 oz. net Aerosol Can Buy Now	8.3 Buy Now
7	VHT SP229 Rust Convertor Can - 10.25 oz Buy Now	8.1 Buy Now
8	Iron OUT Spray Gel Rust Stain Remover, Remove and Prevent Rust Stains in Buy Now	7.8 Buy Now
9	WD-40 300004 Specialist 11 oz. Rust Release Penetrant Spray with Smart Straw Buy Now	7.5 Buy Now
10	Rust-Oleum 7769830 Stops Rust Spray Paint, 12-Ounce, Flat Rusty Metal Primer Buy Now	7.2 Buy Now

1. Rust-Oleum 248656 Professional Grade Rubberized Undercoating Spray, 15 oz, Black

• Undercoating helps deaden sound and reduce damage to parts
• Features a wide, comfort spray tip and any-angle spray technology for easy painting even upside down
• Perfect for use on bare or primed metal underbodies of cars, trucks, trailers, rvs and more
• Dries to the touch in 1 hour and covers up to 10-15 sq. ft. per can
• Professional-grade formula provides superior protection against corrosion and damage from water, salt and other chemicals

2. Rust-Oleum 215215 Stops Rust Rust Reformer Rust Reformer 10.25-Ounce Spray-Color Black

• Water-based film forming product converts rust into a paintable surface, there's no need to sand to bare metal
• Protects surface from future rust
• Dries to touch in 20-40 minutes and covers up to 12 sq ft
• Creates a flat black finish that can be painted 24 hours following application with any oil-based top coat
• For use on exterior or interior rusted metal surfaces only

3. KRUD KUTTER MR32 The Must For Rust, 32-Ounce Trigger Spray

• Unique rust remover and inhibitor removes and prevents rust in one step
• Water-based formulation penetrates into every void of a metal surface and dissolves rust/oxidation through chemical action
• Protects bare metal from rust for up to a year
• Wipe or rinse following use to provide a paint ready surface and create secure bond for topcoat
• Easy to use spray on application allows for completion of small projects quickly and soak in for larger projects

4. Rust-Oleum Automotive 248658 10.25-Ounce Rust Reformer Spray, Black

• Model number: 248658
• Item package dimensions: 18.0" l x 18.0" w x 21.0" h
• Country of origin: united states
• Item package weight: 3.25 lb

5. WD40 300035 Specialist Corrosion Inhibitor Spray - 6.5 oz

• Protects metal parts, blocking rust and corrosion for up to one year outdoors and two years indoors
• Blocks rust and corrosion
• Protects metals up to 2 years
• 50-state voc compliant

6. Permatex 81849 Rust Treatment, 10.25 oz. net Aerosol Can

• Easily applied, just brush or spray it on
• Within minutes, rust disappears and a durable black polymer coating develops
• Tough coating serves as an excellent protective primer that you can paint over
• Destroys rust on all automotive applications
• Specially formulated to be used with body filler and fiberglass

7. VHT SP229 Rust Convertor Can - 10.25 oz

• Rust convertor is a unique product designed to spray directly on rusted areas
• Rust convertor sands to a smooth, even finish
• Prevent future rust from forming
• This item is not for sale in catalina island
• Sprays on clear and turns to a black metal

8. Iron OUT Spray Gel Rust Stain Remover, Remove and Prevent Rust Stains in

• Ideal for geographic regions with hard water and high iron
• Made in the usa
• Ideal for vertical and hard to reach surfaces, like showers, sinks, tubs and toilets above the water line
• Quickly and easily removes the toughest rust stains from most surfaces in and around the home
• Powerful gel clings to dissolve rust stains on contact, no scrubbing necessary
• Best on rust: #1 heavy-duty rust stain remover brand

9. WD-40 300004 Specialist 11 oz. Rust Release Penetrant Spray with Smart Straw

• Ideal for use on nuts, bolts, threads and locks
• Fast-acting formula
• Extra-penetrating blu torch technology
• Quick and easy to use

10. Rust-Oleum 7769830 Stops Rust Spray Paint, 12-Ounce, Flat Rusty Metal Primer

• Use to prime exterior or interior heavily rusted metal surfaces only
• Creates a surface that topcoats can easily adhere to
• Oil-based formula provides a durable protective coating with excellent rust prevention
• Primer provides a base for excellent adhesion and withstands demanding, heavy-use environments
• Dries to touch in 15 minutes and covers up to 20 sq ft