Corrosion Inhibitors for Metal | WD-40 Corrosion Inhibitor | WD-40
UPC 0 79567 30003 8
UPC 0 79567 30003 8

WD-40 Specialist® Corrosion Inhibitor

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

Related Products

WD-40 Specialist® Gel Lube Product

WD-40 Specialist® Gel Lube

4.80 (163)
Can of WD-40 Smart Straw

WD-40® Smart Straw®

3.83 (447)

Customer Reviews

Average Customer Ratings

4.63 (8 Customer Reviews)
4.63 (8)

Rating Snapshot

Select a row below to filter reviews

Sort by: newest to oldest ranking


Works as it supposed to

Mainly using this to protect the metal parts of the grill, prevent it from developing rust and thereby prolonging the life of the grill. I apply it to all metal parts before storing it during the winter time. Also gives it a nice, brand new shine. Love this product!


Great for long term firearm storage

I was using 0w20 Full Synthetic Motor Oil but I tried this in a high humidity area and it works great. I now spray all of the tools, saw blades etc in the shed when storing. Works fantastic.


Excellent Long Term Corrosion Protection

A friend familiar with the product recommended it. I cleaned rust from a shovel that we leave out year round to clean up after the dogs, and then applied Specialist Long Term Corrosion Inhibitor ONCE two years ago. There is still a "wet" residue of the product on the shovel but NO RUST. I've applied it to mover blades, woodworking machine tables, hand tools, etc., by spraying on a rag and applying a thin film to the surface needing protection, and rust has yet to reappear. I've sprayed it on suspension components and underbody areas of my Jeep that had light surface rust two years ago, and the corrosion has not spread. This is one product that works as described.


I use it on my knives.

Been using on my Damascus knives with great success. THANKS!!!!!


Stops rust and corrosion

I live in the Florida Keys. A very hot, very humid climate laden with salt air. The damp,salt air is highly corrosive. I spray WD-40 on all my lawn, garden construction equipment that have metal after each use. A 3 year old gas powered hedge trimmer still looks like new. My old one rusted rusted and was ruined. I use this for my saw blades, drill bits, tree saws and all keep their new like appearence and sharpness that otherwise would have rusted, dulled and been no good.


Not as Good a Paint, But...

I've found this to be exactly what it's title says it is. Not rust protectant, or remover. Just a way to prevent rust from developing. Doesn't stay on long in outside conditions, but does inside or in areas not exposed to weather.


great products to expensive!!

Trying to use a 6.5 oz can to protect a plow rig not practical.


Works great prevents rust and its weldable

While working on a Chromolly race cage we stored  it outside in rainy weather under a tarp for 2 days , pulled it out with no rust. And best of all it welded up great with no problems.