When people experience rust on their tools or vehicles, they naturally want to find a way to remove the problem. There are several methods about how to perform this task, but one of the easiest methods is to use a rust converter.
How does rust converter work?
This liquid primer is water-based and contains two active ingredients. The first ingredient, tannic acid, reacts with the rust to transform it into iron tannate. The second ingredient, 2-Butoxyethanol, works to provide a protective layer after the tannic acid has performed its job.
Best Rust Converters 2018
|Black Star||1 gallon||400-500 square feet||$89.95|
|Corroseal Water-Based||1 gallon||200-260 square feet||$65.83|
|Black Star Aerosol||13 OZ||For small spaces||$29.95|
|Gempler's Eco-Friendly RCQ||1 Quart||125 square feet||$20.79|
|One Step Primer Sealer||10 OZ||no info||$22.96|
|Rustzilla||8 OZ||24 square feet||$17.99|
|PlastiKote 623||8 OZ||no info||$16.67|
1. Black Star – Editor’s Choice Rust Converter
MRO Chem produces Black Star Rust Converter. It uses 21st technology to convert rust into a slick resin coating made of polymers. With this product, a person does not need to perform any sanding or sandblasting. Scraping and etching are also virtually a thing of the past according to MRO Chem. The rust conversion process happens rather quickly with even the hardest corrosion.
This product has been tested in many instances to provide support of its power. Oil Rig workers in the North Sea have used this product for years on their equipment, and much the same can be said for farmers who live and work in the Heartland. You can use it on any material made of metal, including fences, roofs, sheds, grain bins, automobiles, marinas, buildings, and more. Whether these products are exposed to the elements or simply a corrosive material, MRO Chem claims Black Star Rust Converter will perform the task at hand with ease. Also we can say it is one of the best rust converters for car.
Covers up to 500 sq ft
One gallon of this product covers a large area. More specifically, it can cover between 400 and 500 square feet. While the color you can see in pictures for the product online might not be exact with the product that you will receive, such a thing does not affect the product’s ability to cut rust.
This rust converter will change rust into a black substance that you can mostly wipe away. However, the remaining metal left behind is covered in a black substance that prevents rust from reoccurring. You can paint this black metal to match any color you please.
2. Corroseal 82331 – Water-Based Rust Treatment
Corroseal’s 82331 Rust Converter comes in several sizes. You can purchase it in size as small as one quart, or in excess up to five gallons. All of these size options prove to be helpful based on the amount of rust converter needed to complete rust removal jobs at hand. People who have smaller, one-time jobs that need to be done might find interest in purchasing the one-quart size. However, for people who work on farms or in automotive repair might find it more cost effective to go with five-gallon purchases at a time. It is important to note, though, that a little bit of Corroseal’s product goes a very long way.
Rust Converter for Truck Frame
After this product has been applied to a rusted surface, it leaves behind a primed surface that is suitable for painting. You can apply any paint on top of this surface, and it should not rust a second time. Also, rust will not continue to spread to other areas from the original spot that has been treated, so in many instances, you can use this rust converter only one time.
3. Black Star Aerosol – Rust Killer Spray
MRO Chem offers an aerosol form of their Black Star Rust Converter. This product comes in a 13-ounce can that eliminates the need for a sprayer tool when applying a rust converter. The goal of this spray is to remove rust with even coverage. Once more, Black Star’s product eliminates the need to do any sanding or blasting to rusted surfaces before treatment can be applied.
Ready for paint over rust
As with all of the products that have been examined thus far, this aerosol spray will prepare a surface for painting and prevent more rust from occurring. Even before paint is applied, sanding and sandblasting do not need to occur. Once this spray has been used, the rust will convert into a solid surface. This surface will likely be dark brown or black, so the paint being used will have to cover such tints. Lighter colors might have to be applied twice for the best effect.
This product can act as either a primer or a final coat in the application. Other products that can be applied to this surface once the conversion process has been completed include solvents and epoxies. They will not tarnish or eat away at the surface left behind with the conversion process. Urethanes are also an option for the final cover up an application over this rust converter. Before any of these products are applied, though, the surface needs to be given time to dry and set after the rust converter has been used.
There are some concerns about shipping the aerosol can, so some states and countries will not allow it to be sent through the mail. The reasoning behind this thought process is that aerosol cans do not handle pressure or jostling easily. A can that is treated unkindly can leak or explode under extreme circumstances.
Rust Converter Reviews
Many businesses and entities use Black Star’s product. Some businesses include ranches and farms, where equipment fights exposure to the elements and corrosive substances like pesticides and gasoline. The United States Navy and oil rig companies make use of this product on their ships and rigs to give them a renewed, longer life. Other applications for this aerosol spray include automobiles, trailers, metal roofs, metal sheds, and metal barns. Also, farmers can use Black Start’s product on their grain bins without fear of the product harming their animals. In short, there are thousands of applications for this rust converter.
The only real downside to this product happens to lie in its size. Only 13 ounces come in the can, so it might not be enough of substance to cover larger projects. For people looking to take care of a little rust in spaces throughout their home or business, they might find an attraction to this aerosol can.
4. Gempler’s Eco-Friendly RCQ
Gempler’s RCQ Rust Converter claims to be the only eco-friendly product on the market for this product and related cleaners. At the same time, it performs the rust converting process on any metal surface with ease. Even antique investments will not be harmed from this product’s processes. It can be used on everything from shop tools to vehicles and tanks.
This rust restorer works similarly to other items that have already been detailed above. It will turn rust into a black barrier with inert qualities. Rust will not spread out from this surface once rust treatment has been applied. Additionally, it works both as a rust converter and a primer. Hence, any paint or substance can be applied to the surface afterward. Matching colors might be a task because covering the black surface left behind by the rust converter might need a few coats for opaqueness to be achieved. Oil-based paints work best on this surface, and they can be applied as soon as 48-hours after the rust converter’s application.
At current, this product only comes in a one-quart size. Therefore, if larger projects need to be done, more of this product will need to be purchased. As mentioned previously, a little bit of this product does go a long way. If only odd and end jobs need to be done around the house or a farm, then one quart of this product will last for some time. Larger businesses and entities might need to consider buying this product in larger quantities from the manufacturer, though.
Gempler’s product has been created and tested to be eco-friendly. The bottle can be recycled, and the product inside is water-based. Hence, it will not cause harm to the environment in any way. If it becomes exposed to skin, it can easily be removed with soap and water. Some customers claim experiences where a resin forms on the skin, but it can be removed with ease in a few days.
5. One Step® Primer Sealer – Rust Converter Spray
3M’s One Step ® comes in a can as well. As with Black Star’s model, it can be used to spray at rust from any angle. Once more, some prep should be performed to rust areas that are scaled or loose. A wire brush can be used to complete this task with little effort.
Once the rust converter primer has dried, which will take about 48-hours, paint and other materials can be applied. Depending on the color of paint being used, more than one coat must be applied. As with previous rust converters, an oil-based paint works the best. Water-based paints might not agree with this rust converter as it is made of water-based materials as well.
3M’s rust converter can be used on many metal surfaces. Anything from automobiles to sheet metal can be restored using this product. Because it comes in a spray can, though, a face mask should be used to prevent inhalation of fine particles that might become airborne during the application process. Some customers report that it must be used in a well-ventilated area as the smell can be rather noxious. Otherwise, they claim it works just as well as, if not better than, most rust converters on the market.
6. Rustzilla Rust Remover
Rustzilla claims their rust converter is easy-to-use with a one-step application process. The preparation process is simple and does not have to be elaborate. In most cases, any scaling just needs to be removed, or loose rust particles need to be knocked away.
This product can also save time and money as it does not require any elaborate sanding or sandblast to be done before or after the product has been applied. It will dry into a black surface in about 48-hours, and it also provides a seal to prevent more rust from forming. This finished surface might need some mild sanding for the sake of evening the plane before it can be painted. Once more, an oil-based paint should be used as water-based paints might react with the seal. However, the finish left behind on its own without any paint, and rust will not reform by performing a protective barrier.
Works with any type of metal
At the same time, it will work on almost any type of metal. Examples include stainless steel and cast iron. Farmers have used it in many applications, such as on their equipment or food troughs. This product is eco-friendly, so it will not harm any animals that might eat from its surface. It also does not contain any solvents or bases. Furthermore, Rustzilla claims their product is non-toxic and non-corrosive. For the sake of fire safety, it is also non-flammable.
Rustzilla also offers a no-risk, money-back guarantee. If a customer does not find satisfaction with their product, a full refund will be given within the first 30 days after purchase. Based on this offer, Rustzilla shows great confidence in their product. Most customers admit happiness with their purchase, especially since this rust converter does not leave behind any residue. Other customers state it is safe to use and easy-to-clean as only a little soap and warm water is needed. Placing this cleaning solution on the applied area directly before it has a chance to dry will disrupt the drying process, though. For even application, cleaning the surface should not happen until the product has dried.
7. PlastiKote 623
PlastiKote also provides a small bottle of rust converter that turns rust into a hard surface for painting by following an organic breakdown process. Additionally, there is little to no chance of bubbling or foaming occurring during the breakdown process.
For the sake of safety, this product is non-toxic and non-flammable. Since it does not come in an aerosol can form, it will sit comfortably in storage areas that do not keep comfortable temperatures, such as a garage or a shed. Since this product does not contain any hazardous chemicals, it is also safe for the environment. Most of this statement is true because of the product’s water-based nature.
One of the more attractive features of this rust converter is the fact it will not cause bleed-through staining on surfaces surrounding the rust being treated. Therefore, coats of paint surrounding the area will not be disturbed as part of the conversion process. Such a quality makes this rust converter perfect for use on automobiles of various colors.
The key to finding the right rust converter is to look for one that provides the least amount of harm to the person using it. For example, the aerosol can option might be a hazard to breathing during application due to small particles. Therefore, those products that go on with a paintbrush or a sponge are often the safer option.
All of these rust converters perform the same task: turning iron oxide (rust) into an inert form that will not continue to grow. However, some of them do it without needing to perform any prep or post-application sanding or blasting. Black Star is one such brand.
One thing to be aware of is how much of this product will need to be used before projects are finished. A little bit of this product does go a long way, but businesses and entities that encounter a lot of rust, such as the United States Navy or car dealerships, might want to consider purchasing this product in larger quantities. Only one or two brands offer larger sizes, but most of them are just large enough to handle things around the house.
Probably one of the most attractive aftereffects of this product is the fact it will not allow rust to spread further. Corroseal and Gempler’s perform this task the best. Gempler’s product is also eco-friendly, so it might be the better of two choices for the long haul.
There are plenty of options when it comes to picking the right rust converter, and some are certainly better than others. MRO Chem’s product that does not come in a spray can is one of the better options. The best spray can product on this list, though, is by 3M. Both of these products have been tested again and again, and they show the most promise in everyday applications. All of these products are water-based, and they are easy to apply and clean up, so they can be used by anyone seeking an easy fix for rust.