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  • Mar-Hyde - One-Step Rust Converter Primer Sealer, 10 oz. aerosol (3509)
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Mar-Hyde - One-Step Rust Converter Primer Sealer, 10 oz. aerosol (3509)


Price: $19.99 & FREE Shipping
In Stock.
Ships from and sold by Midway Auto Supply.
  • Chemically reacts to convert rust into a hard black primer sealer
  • 10.25 oz. Aerosol
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3 new from $14.10
Special Shipping Information: This product cannot be returned to Amazon.com because it uses flammable liquids and gases, is classified as a hazardous material, or meets other criteria. Learn more

Frequently Bought Together

Mar-Hyde - One-Step Rust Converter Primer Sealer, 10 oz. aerosol (3509) + Allway Tool Inc. Mp Ss Mini Wire Brush Smb Wire/Scrub Brushes
Price for both: $23.93

These items are shipped from and sold by different sellers.

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Product Information

Technical Details
BrandMar-Hyde
Item Weight2 pounds
Item model number3509
Manufacturer Part Number3509
  
Additional Information
ASINB0009LPJ0Q
Best Sellers Rank #9,547 in Automotive (See top 100)
Shipping Weight2 pounds (View shipping rates and policies)
Date First AvailableJuly 7, 2004
  
Warranty & Support
Warranty, Parts: Parts

Product Warranty: For warranty information about this product, please click here
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Product Description

Mar-Hyde One-Step Rust Converter Primer Sealer chemically reacts to convert rust into a hard, black primer sealer. Apply One-Step on rusted surfaces and rust is permanently converted and ready for primer and topcoat. One-Step Rust Converter Primer Sealer is a water-based latex containing rust modifiers, which is designed for application directly over tightly bonded rust on iron or steel. Also proven effective on new degreased or mild steel where flash-rusting has occurred. Shortly after application, the rusted surface will change form white to purple to a stable black coating. A uniform black coating indicates the complete conversion of the rust; white streaks or remaining rust indicates that an additional coat is required.

Customer Questions & Answers

Customer Reviews

3.8 out of 5 stars

Most Helpful Customer Reviews

60 of 62 people found the following review helpful By J. Fishel on June 9, 2009
Verified Purchase
Well, my 2005 truck had a lot of surface rust on the frame, so I thought I would nip it in the bud. I read a lot online about what to use and decided to go with the mar-hyde rust converter.

I used about 2 full cans to rust convert the frame, drive shaft, axles and hitch of 1 mid-sized pickup. I will probably go back and touch up with another can. I tried to avoid spraying on plastic parts, but it doesn't say anywhere that it will hurt plastic or rubber parts. It does say not to spray on any surface that exceeds 200 degrees, so I definitely avoided the exhaust and engine. The body itself looked perfect so I did not use any on the body. It seemed to do a good job. By the day after I sprayed, the rust had all converted to a smoother darker finish.

On the down side, the fumes seem very noxious. I used it outside, on a slightly breezy warm day and the fumes were still strong, especially if you got in the "cloud." I would only use it outside and preferably with some sort of mask and away from children or pets.

I am planning on coating the underside of the truck with fluid film also, but I have not done this yet. I am not planning on painting the frame. Its been about 2 weeks since I performed the initial treatment and I have had no problems.

Well, there is my story about mar-hyde. I am not an expert, but there is my experience. hope it helps someone.
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34 of 35 people found the following review helpful By M. Krause on November 7, 2008
Verified Purchase
Been using One-Step for years. It kills rust dead in its tracks. Wire brush the loose rust and spray it on. It converts rust into black paint. I do recommend topcoating over it. Typically I would use One-Step, then primer over that, then top coat it. I've used it on cars(frame and body both) as well as tractors.
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5 of 5 people found the following review helpful By A Buyer on February 14, 2013
Verified Purchase
have used Mar Hyde frequently. This is the spray can. If you can brush on the liquid, I think that is better, seems stronger. However if it's some place hard to reach you need a spray. This is a better product than the sprays you usually find in the big box stores, or auto stores. It's more expensive but I think it is worth more. Follow the instructions, remove any loose rust with wire brush or open cote abrasive wheel on high speed grinder or Roloc disc. This time I am using a Phosphoric Acid etch before application (belt and suspender approach) Will see how this works. Directions say rust will turn black. True, but not all of it and not all of it turns quickly. this will trick you into over applying. Pits tend to stay orange and the product forms a shiny latex seal over it; further application wont change the pits. If you have pits and patience, take a drill bit by hand, put it in the pits and twist to bust loose any loose flaky rust. You don't have to get it perfect, the red rust iron oxide is turned into black rust iron phosphate by the product.

Don't get it wet with water until fully dry because it will bleed purple. This includes overnight dew. Do not over apply. Rusty areas will turn a glossy wet looking black. Do not waste time using "Extend" or that spray they sell at Autozone. This stuff is better.
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1 of 1 people found the following review helpful By DARON on March 25, 2014
Verified Purchase
WORKS ON RUST IMMEDIATELY AND FULLY IN ONE TO TWO HOURS. TURNS RUST WHITE OR BLACK AND NEUTRALIZES IT. SPRAYED IT ON MY VAN ROOF, FANASTIC. A MONTH LATER EVEN AFTER A HARD RAIN I SEE NO RED RUST ANYWHERE. I AM GOING TO BUY MORE. TO USE ON BOTH MY CARS.
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1 of 1 people found the following review helpful By !!!!! C5 !!!!! on October 17, 2012
Verified Purchase
This stuff works as advertised. Easy to apply and covers well. It appears to convert any rust on contact. Only time will tell but it looks like it will last.
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6 of 9 people found the following review helpful By ToniK on August 22, 2011
Verified Purchase
I am still experimenting with this product. First time I used it the product flaked off in 3 days. I am following instructions but it is no adhering. I did read online that product needs rust to adhere so I let it rust up again and will try again with the One-Step Rust Converter Primer Sealer, 10 oz. aerosol.
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By tammy on May 18, 2013
Verified Purchase
I was amazed with this. It does work. you really can see it converting the rust. I used it on a few small places on my truck, then a few places on my dads truck. I have a lot of underneath that will later use it on.. I have to order more of it sometime when I get back to doing that project.
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By Jim MacDuff on August 27, 2014
Verified Purchase
It seemed to work when I first applied it, the rust turned black, but then the rust seemed to reappear. After the final application the treated area turned a tan color which washed off leaving the rust as before.
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