Search  for anything...

Rust Kutter - Stops Rust and Converts Rust Spots to Leave A Primed Surface Ready to Paint, Professional Rust Repair Manufactured in USA – Sprayer Included

  • Based on 2,428 reviews
Condition: New
Checking for the best price...
$22.99 Why this price?
Save $3.06 was $26.05

Buy Now, Pay Later


As low as $5 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Oct 12
Order within 21 hours and 37 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Features

  • A rust converter is a specialized product designed to convert rust into a more stable and non-reactive compound that can be painted over.
  • Rust converters work by chemically reacting with the rust, breaking it down into a stable, black compound that can be easily painted over.
  • This product is ideal for use on metal surfaces that have rusted, such as car bodies, metal tools, and outdoor equipment.
  • Rust converters can also be used to help prevent further rust formation by creating a protective barrier on the surface of the metal.
  • Rust converters are easy to apply and can be used with a brush, roller, or spray gun, depending on the size and complexity of the surface being treated.
  • Available in Quarts & Gallons

Description

Rust Kutter is a balanced formula that causes rust to chemically change to phosphate. A coat of paint attaches itself so closely to the metal that moisture and oxygen cannot attack the surface, resulting in a much longer paint job. Remove any loose rust with a wire brush or wire wheel. Rust must be present for product to work. Spray or paint on Rust Kutter. Rinse & let dry. Dry conditions & low humidity should allow for a 24 hour drying time. Brush off any loose residue. You can repaint from here or leave area as is. Rust Kutter stops the oxidation process to prevent further rusting. Stop even the toughest rusting on ferrous metals, tools, farm equipment, railings, lawn furniture and truck beds. Where can I use Rust Kutter? Rust Kutter is for use on metal surfaces that have rusted, such as: car bodies, metal tools and outdoor equipment. This is not meant for surfaces that exceed 220 degrees Fahrenheit. How do I apply Rust Kutter? Rust Kutter can be used with a brush, roller, or spray gun, depending on the size and complexity of the surface being treated. See label for more in depth step-by-step instructions. Do I have to paint the surface after using Rust Kutter? Painting is not required. Painting the surface after Rust Kutter application will likely prolong the protection from rust later on. Are there temperature restrictions when using Rust Kutter? We recommend using Rust Kutter when temperatures are between 50-90 degrees Fahrenheit. Rust Kutter is not intended for surfaces that will reach over 200 degrees Fahrenheit.

Package Dimensions ‏ : ‎ 9.4 x 4.6 x 3.5 inches; 2.76 pounds


Item model number ‏ : ‎ 08088


Date First Available ‏ : ‎ February 25, 2009


Manufacturer ‏ : ‎ Sanco Industries


Best Sellers Rank: #8,251 in Automotive (See Top 100 in Automotive) #50 in Care Corrosion & Rust Inhibitors #537 in Oils & Fluids


#50 in Care Corrosion & Rust Inhibitors:


#537 in Oils & Fluids:


Customer Reviews: 4.4 4.4 out of 5 stars (2,428)


Item Form: Spray


Scent: Unscented


Specific Uses For Product: Car,Gun


Surface Recommendation: Metal,Tile,Stone


Item Volume: 32 fluid ounces


Unit Count: 32 Fluid Ounces


Number of Items: 1


Item Weight: 2.8 pounds


Size: 32 Fl Oz (Pack of 1)


Brand Name: Rust Kutter


Manufacturer: Sanco Industries


UPC: 768980080886


Model Number: 08088


Part Number: 08088


Material Features: Spray


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Oct 12

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Miracle worker, this is the one true rust converter
This stuff is amazing, bar none. And really, the price isn't bad when you consider the price of buying the ingredients separately and mixing it yourself would only save you a few bucks per gallon and probably not work as well. Basically this consists of ~%35 phosphoric acid, ~%5 citric acid, and some surfactants (alcohol and NP9.5) to help the solution penetrate the rust and scale. The citric acid helps dissolve the loose rust and make it water soluble, and the phosphoric acid reacts with the rust (iron oxide) converting it into iron phosphate, which is actually an anti-rust coating that is commercially applied to some steel products. If you prep properly by removing the loose rust and paint and making sure the surface is free of oils, you'll end up with all the rusty brown spots turning a satisfying black color, and the excess acid drying up to a white powder. Then you just rinse off the excess and optionally paint to protect the bare steel that didn't get converted. I bought this after watching a YouTube video that compared most of the "rust converting" products on the market, including the primers, aerosols, and acids. This blew the competition away. I had to try it for myself and I'm glad I did! You should wear gloves and eye protection while using it, as while it's the consistency of soapy water and comes in a household spray bottle, the spray will definitely sting your eyes, and if some spray dribbles out of the bottle onto your hands you can feel it dissolving the top layers of your skin like bleach (your fingers get slippery). However, it doesn't stink and it washes off easily with water. Note that this is not a "quick fix", the solution takes one to three days to convert the rust, and on heavily rusted objects you may need to apply two or three times, allowing the solution to dry in-between. But the results are amazing. My bottle saved a totally trashed wheelbarrow, protected another wheelbarrow that was starting to rust in the basket, fixed up my super rusty cast iron digging bar that I've had to previously grind every year, and cleaned up a bunch of rusty lug nuts, wheel mounts, and rims on an old car. And I still have 1/3 bottle left. I still plan to paint most of those objects for extra protection, but I'm a believer and will definitely be buying this again in the future. Now if you'll excuse me, I have some rusty lawn furniture and tools to hit next. ... show more
Reviewed in the United States on April 9, 2026 by Curly Mom

  • Works !!!
Very good rust hasn't come back better than any other product I've used
Reviewed in the United States on August 13, 2026 by PWC

  • Rust
Works pretty good
Reviewed in the United States on August 30, 2026 by David measell

  • Works on most surfaces.
This works on most rust it even helped with marble oxidation. It generally turns white then you have to clean the white residue which is far easier than dealing with the rust. Out of several rust prevention products I have tried this has the best by far.
Reviewed in the United States on July 17, 2026 by jeremiah lynch

  • Worth the money
fantastic product. Melts away rust. Much better than Rustoleum Or CRC
Reviewed in the United States on September 7, 2026 by JH Associates

  • Not sure if it works
Tried it on different surfaces under different conditions. Can't tell if the product really works or it's the brush. Let a rusty grill soaking for over a day, looks a lot like it was soaking in water.
Reviewed in the United States on August 25, 2026 by Denis gulik

  • Does the trick
Have used this product before. Works great on my yard decorations when they need a touch up and are not at the beyond help stage.
Reviewed in the United States on August 21, 2026 by Amazon Customer

  • ventilated area
works great
Reviewed in the United States on September 5, 2026 by Julian B.

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...