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WD-40 Specialist Corrosion Inhibitor, Long-Lasting Anti-Rust Spray, 6.5 OZ

4.7 out of 5 stars 2,356 ratings

$14.99 with 11 percent savings $2.31 per ounce
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  • Coats metal parts to lubricate and protect against rust and corrosion by blocking out air and moisture. Protects for up to 2 years when used indoors and for up to 1 year when used outdoors
  • Recommended for preventative maintenance or for protection in corrosive environments, such as hot and highly humid or cold, and winter atmospheres
  • Included straw creates a precision stream of lubricant for controlled application and fastens to the notched cap for secure storage
  • Non-drying lubricant does not run and says where you spray it. 50-state VOC compliant and NSF Category A7
  • WD-40 Brand believes in creating high-quality products that will not fail in extreme conditions. Professionals rely on WD-40 Specialist to get the job done right
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WD-40 Specialist Corrosion Inhibitor
  • Protects metal from rust and corrosion for up to 2 years
  • Extends life of tools and equipment
  • Ideal on equipment in storage
  • NSF Category A7 (#146726)
  • 50-state VOC compliant

WD-40 Specialist Long-Lasting Corrosion Inhibitor

A long-term rust preventative that protects metal parts, blocking rust and corrosion for up to 1 year outdoors or 2 years indoors.

WD-40 Specialist Long-Term Corrosion Inhibitor is an anti-rust spray ideal for preventative maintenance and use in extreme environments such as high humidity. It provides non-drying protection that stays where you spray it.

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Customer Reviews
4.8 out of 5 stars 17,442
4.8 out of 5 stars 338
4.8 out of 5 stars 7,425
4.8 out of 5 stars 14,295
4.7 out of 5 stars 2,356
4.7 out of 5 stars 2,940
Price $46.39 $50.88 $53.67 $47.88 $87.87 $64.87
WD-40 Specialist Favorites
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WD-40 Specialist

Whether you need the original blue and yellow can with thousands of uses, or a WD-40 Specialist penetrating oil, lubricant, cleaner, or solution to protect against or remove rust, we’ve got you covered. Get the job done right with a range of products – WD-40 Multi-Use Product, WD-40 Specialist and WD-40 BIKE – and live life hands on.

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Product Description

A long-lasting rust preventative that protects metal parts, blocking rust and corrosion for up to 1 year outdoors or 2 years indoors. WD-40 Specialist Corrosion Inhibitor is an anti-rust spray ideal for preventative maintenance and use in extreme environments such as high humidity. It provides non-drying protection that stays where you spray it. A must have for corrosion protection. *Long-lasting rust & corrosion protection *Protects metals for one year *Extends life of tools and equipment *Ideal on equipment in storage *50-State VOC Compliant

Product information

Technical Details

Manufacturer ‎WD-40
Brand ‎WD-40 Specialist
Model ‎300035
Item Weight ‎8 ounces
Product Dimensions ‎3 x 3 x 7 inches
Country of Origin ‎USA
Item model number ‎300035
Manufacturer Part Number ‎300035

Additional Information

ASIN B00631GWS4
Customer Reviews
4.7 out of 5 stars 2,356 ratings

4.7 out of 5 stars
Best Sellers Rank #2,660 in Automotive (See Top 100 in Automotive)
#11 in Care Corrosion & Rust Inhibitors
Date First Available November 2, 2011

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WD-40 Specialist Corrosion Inhibitor, Long-Lasting Anti-Rust Spray, 6.5 OZ


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What's in the box

  • WD40 300035 Specialist Corrosion Inhibitor Spray - 6.5 oz.
  • Customer reviews

    4.7 out of 5 stars
    2,356 global ratings

    Review this product

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    Customers say

    Customers find the corrosion inhibitor works well, with one mentioning its effectiveness when sprayed under a truck. The product effectively prevents rust on iron and steel surfaces, and customers appreciate its long-lasting protection, with one noting its effectiveness in dusty and arid conditions.

    AI-generated from the text of customer reviews

    124 customers mention "Functionality"118 positive6 negative

    Customers find that the corrosion inhibitor works well, with one customer specifically noting its effectiveness when sprayed under their truck.

    "Great product! For rusty hand tools, I take several steps: 1...." Read more

    "good stuff...can't go wrong with WD40 products" Read more

    "Smells funny - works great, goes on thick when you spray it." Read more

    "...First, it's a really small can for the price. Second, it works really well, but leaves a sticky coating...." Read more

    73 customers mention "Rust prevention"61 positive12 negative

    Customers praise the rust prevention properties of this product, noting it works effectively on iron and steel surfaces, with one customer reporting it lasts about 6 months.

    "...Tools are now as new and protected from rust. This rust inhibitor works much better than WD40 penetrant for rust protection...." Read more

    "...When finished, I recoat the tool with the WD-40. It does stop rust, but it's not practical for my use." Read more

    "...and has the consistency of a very waxy heavy grease, significantly deterring corrosion and very long lasting...." Read more

    "...After two weeks, it just about removed all the visible rust and protected the part even in dusty and arid conditions...." Read more

    30 customers mention "Longevity"30 positive0 negative

    Customers appreciate the corrosion inhibitor's longevity, noting it provides long-term protection for tools and equipment, with one customer mentioning its effectiveness in dusty and arid conditions.

    "...a very waxy heavy grease, significantly deterring corrosion and very long lasting. How metal was packed many many decades ago...." Read more

    "...it just about removed all the visible rust and protected the part even in dusty and arid conditions. It didn't seem like it dried out...." Read more

    "...used it on a bench from which I had to remove. Kept for non contact use" Read more

    "Protection for long term" Read more

    Works GREAT!
    5 out of 5 stars
    Works GREAT!
    I have heavy security type screen doors. After time they get faded and rusty and dog drool stained regardless of cleaning. I have treated 2 of the doors and they look brand new. Did my old bistro table as well, same results! Can’t wait to try on other outdoor metals!!!
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    Top reviews from the United States

    • Reviewed in the United States on March 1, 2025
      Size: 1-PackNumber of Items: 1Verified Purchase
      Great product!

      For rusty hand tools, I take several steps:
      1. Place all hand tools in a 2 gallon bucket of distilled white vinegar.
      2. Let stay for 3 to 4 days.
      3. Rinse off with hot soapy water, and use dish scouring pad as necessary.
      4. Dry with hand towel.
      5. Spray joints with WD40 lubricant, such as pliers and wire cutters.
      6. Spray this rust inhibitor onto each tool while holding tool in a 5 gallon bucket to catch the overspray.
      7. Wipe off vinyl or composite or wood (hammers) handles with a soapy rag.

      Tools are now as new and protected from rust. This rust inhibitor works much better than WD40 penetrant for rust protection. Think of WD40 penetrant and this rust inhibitor as being complementary, not just one or the other.
      3 people found this helpful
      Report
    • Reviewed in the United States on April 10, 2025
      Size: 1-PackNumber of Items: 1Verified Purchase
      good stuff...can't go wrong with WD40 products
    • Reviewed in the United States on March 7, 2025
      Size: 1-PackNumber of Items: 1Verified Purchase
      Smells funny - works great, goes on thick when you spray it.
    • Reviewed in the United States on March 11, 2024
      Size: 1-PackNumber of Items: 1Verified Purchase
      I have a woodworking shop near Houston. It's very humid most of the year and fighting rust on my cast iron tools is a constant battle. I tried this WD-40 corrosion inhibitor and had mixed feelings about it. First, it's a really small can for the price. Second, it works really well, but leaves a sticky coating. Unfortunately, wood cannot slide smoothly across this coating. The sequence I have developed is to spray a thin coat of WD-40, rub it on and cover the tool. When I need to use the tool, I uncover it, wipe off the WD-40 with mineral spirits and apply a coat of wax. When finished, I recoat the tool with the WD-40. It does stop rust, but it's not practical for my use.
      10 people found this helpful
      Report
    • Reviewed in the United States on June 23, 2024
      Size: 1-PackNumber of Items: 1Verified Purchase
      This is a small can, and I should be ordering twice as much as I think I'll need.

      A product somewhat similar to Brownells Rust Veto, I have a one pound container of Rust Veto, and has the consistency of a very waxy heavy grease, significantly deterring corrosion and very long lasting. How metal was packed many many decades ago.

      Now finally, WD-40 seems to have a spray-on similar corrosion prevention material/product. Especially since many of a us whom religiously clean engine and metal parts using WD-40, only to subsequently watch those parts rust because we didn't apply something preventing corrosion! Seems WD-40 might be coming back into the corrosion prevention market...

      The WD-40 Corrosion Inhibitor sprays a heavy greasy material, along with a light petroleum like mineral spirit material onto your target, and will stay put. I am guessing, on metal products with frequent handling, the target can be wiped down, similar when using Brownells Rust Veto product, so as not to leave a sticky messy residue and will probably more completely somewhat dry more so providing a thin layer of corrosion protection.
      9 people found this helpful
      Report
    • Reviewed in the United States on February 6, 2025
      Size: 1-PackNumber of Items: 1Verified Purchase
      WD40 is a standard because it works so well.
    • Reviewed in the United States on August 1, 2020
      Size: 1-PackNumber of Items: 1Verified Purchase
      I use this on highly exposed parts on my RV. I primarily use this for prevention in areas prone to rust. The best prevention is to ensure any rust is removed and painted appropriately. That being said, there are simply places that cannot be painted, such as scissor stabilizers or areas exposed to road debris. This is where this product comes into play for me. In one situation, simply because I did not have the time to properly fix it, I just sprayed it on the affected area to prevent further rust. By the time I got back to it, the rust was almost entirely removed. Because it was more of an unsightly issue than a critical component, I let it sit longer. After two weeks, it just about removed all the visible rust and protected the part even in dusty and arid conditions. It didn't seem like it dried out. I was impressed. This will be used for removal, prevention, and quick fix to prevent further damage until it can be properly fixed.

      Overall, this is a good product, but a bit pricey. Time will tell how much a 6.5 ounce can will last, which will ultimately determine its overall value. For effectiveness, it works great. I would recommend.
      16 people found this helpful
      Report
    • Reviewed in the United States on December 20, 2024
      Size: 1-PackNumber of Items: 1Verified Purchase
      Very good!

    Top reviews from other countries

    Translate all reviews to English
    • Sly In Solo
      5.0 out of 5 stars Excellent produit
      Reviewed in Canada on April 15, 2022
      Size: 1-PackNumber of Items: 1Verified Purchase
      Nous avons 2 voitures pas recentes mais propres, j’ai testé cette enduit sur quelques pièces et surfaces avec de la corrosion puis verifié le resultat apres avoir passé un hiver Canadien. Je suis surpris du résultat, le produit dilue la rouille puis sèche apres environs une journée laissant une protection qui a passé l’hivers. Oui c’est Très dispendieux pour une petite bouteille mais je le recommande tout de même fortement.
      Report
    • Alejandra B
      5.0 out of 5 stars Bueno
      Reviewed in Mexico on April 27, 2025
      Size: 1-PackNumber of Items: 1Verified Purchase
      Buen producto, denso
    • RAJENDRA S.
      5.0 out of 5 stars Excellent product
      Reviewed in India on December 14, 2018
      Size: 1-PackNumber of Items: 1Verified Purchase
      Very useful , meets the expectations.
    • Jpcash
      5.0 out of 5 stars Excelente
      Reviewed in Mexico on February 26, 2025
      Size: 1-PackNumber of Items: 1Verified Purchase
      Frena la corrosión de barillas en lozas , columnas y trabes
    • D**
      5.0 out of 5 stars Eficaz, lubrica y protege, ¡sólo WD-40 Specialist!
      Reviewed in Mexico on August 31, 2024
      Size: 1-PackNumber of Items: 1Verified Purchase
      Como ingeniero metalúrgico sé que ninguna pieza metálica se salva de la oxidación, incluso si están almacenados (claro, a menos que estén al vacío).
      Hago trabajos eléctricos y de fontanería por pasatiempo, por eso sé que invertir en buenas herramientas es ideal para evitar hacer gastos recurrentes en nueva herramienta, después de cada trabajo limpio toda la herramienta que usé (elimino polvo, remuevo óxido superficial con cepillo de latón) y aplico este lubricante, es el que elijo por los resultados que me ha dado, no sólo protección contra la oxidación y corrosión en herramientas, también en bisagras, cadenas, soportes metálicos y otras aplicaciones. Las herramientas que ves las he tenido por más de un año, algunas son de años, pero teniendo el cuidado y mantenimiento adecuado pueden parecer de ayer.

      Nota: Una vez que rocías el lubricante en el objeto deja una capa "blanca espesa", esta desaparece en varios meses si fue abundante, si fue una capa fina y la esparces por la superficie no es notoria.
      Customer image
      D**
      5.0 out of 5 stars
      Eficaz, lubrica y protege, ¡sólo WD-40 Specialist!

      Reviewed in Mexico on August 31, 2024
      Como ingeniero metalúrgico sé que ninguna pieza metálica se salva de la oxidación, incluso si están almacenados (claro, a menos que estén al vacío).
      Hago trabajos eléctricos y de fontanería por pasatiempo, por eso sé que invertir en buenas herramientas es ideal para evitar hacer gastos recurrentes en nueva herramienta, después de cada trabajo limpio toda la herramienta que usé (elimino polvo, remuevo óxido superficial con cepillo de latón) y aplico este lubricante, es el que elijo por los resultados que me ha dado, no sólo protección contra la oxidación y corrosión en herramientas, también en bisagras, cadenas, soportes metálicos y otras aplicaciones. Las herramientas que ves las he tenido por más de un año, algunas son de años, pero teniendo el cuidado y mantenimiento adecuado pueden parecer de ayer.

      Nota: Una vez que rocías el lubricante en el objeto deja una capa "blanca espesa", esta desaparece en varios meses si fue abundante, si fue una capa fina y la esparces por la superficie no es notoria.
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    Product Summary: WD-40 Specialist Corrosion Inhibitor, Long-Lasting Anti-Rust Spray, 6.5 OZ

    From WD-40 Specialist

    4.7 out of 5 stars, 2,356 ratings

    Customer reviews

    300+ bought in past week

    Price

    One-time purchase: $14.99 ( $2.31 / ounce) 11% Savings

    List Price: $16.89

    Subscribe & Save price (No fees, Cancel anytime): $14.99 ( $2.31 / Ounce) 11% Savings

    List Price: $16.89

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    About this Item

    • Coats metal parts to lubricate and protect against rust and corrosion by blocking out air and moisture. Protects for up to 2 years when used indoors and for up to 1 year when used outdoors
    • Recommended for preventative maintenance or for protection in corrosive environments, such as hot and highly humid or cold, and winter atmospheres
    • Included straw creates a precision stream of lubricant for controlled application and fastens to the notched cap for secure storage
    • Non-drying lubricant does not run and says where you spray it. 50-state VOC compliant and NSF Category A7
    • WD-40 Brand believes in creating high-quality products that will not fail in extreme conditions. Professionals rely on WD-40 Specialist to get the job done right

    Product Description

    A long-lasting rust preventative that protects metal parts, blocking rust and corrosion for up to 1 year outdoors or 2 years indoors. WD-40 Specialist Corrosion Inhibitor is an anti-rust spray ideal for preventative maintenance and use in extreme environments such as high humidity. It provides non-drying protection that stays where you spray it. A must have for corrosion protection. *Long-lasting rust & corrosion protection *Protects metals for one year *Extends life of tools and equipment *Ideal on equipment in storage *50-State VOC Compliant

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    Important Information

    Proposition 65 Warning for California Consumers

    WARNING: This product can expose you to chemicals including Lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

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