Corrosion Inhibitor & Control Spray - WD-40 Specialist
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WD-40 Specialist Long-Term Corrosion Inhibitor

Long-Term Corrosion Inhibitor


  • Blocks rust and corrosion
  • Protects metals up to 2 years
  • 50-state VOC compliant
  • NSF Category A7 (#146726)

6.5 oz Long-Term Corrosion Inhibitor UPC 079567300038
6 count case Order # 300035

WD-40® SPECIALIST® LONG-TERM CORROSION INHIBITOR protects metal parts, blocking rust and corrosion for up to one year outdoors and two years indoors. Our anti-rust spray is ideal for both preventative maintenance and use in extreme environments such as high humidity. Safe to use and 50-state VOC compliant, it provides non-drying protection that stays where you spray it.



WD-40 Specialist Long-Term Corrosion Inhibitor Corrosion Protection Test GraphWD-40 Specialist Long-Term Corrosion Inhibitor Corrosion Protection Test Graph The test and what it means: ASTM B-117 is used to measure the level of corrosion protection provided by a test fluid at extreme conditions. Steel panels are treated with the test fluid and are allowed to drain for 2 hours, then placed in the salt spray cabinet that contains a fog of 5% salt (NaCl) solution.Even after 1200 hours of exposure to the harsh environments, WD-40 Specialist Long Term Corrosion Inhibitor helps prevent corrosion when compared to untreated metal.


  • How to Protect Metal Equipment from Rust and Corrosion

    Before placing metal parts, tools and equipment in storage, protect them from the damaging and costly effects of rust and corrosion with WD-40® Specialist® Long-Term Corrosion Inhibitor. Its unique formula blocks rust and corrosion up to one year outdoors and two years indoors.

  • WD-40® Specialist® Products Join the Party

    Love the blue and yellow can? Good. Now it’s time to invite the specialty products to the party. Introducing the WD-40® Specialist® line of products.

  • WD-40® Specialist® Rust Bust Kit

    WD-40® Specialist® Rust Remover Soak, WD-40® Specialist® Long-Term Corrosion Inhibitor, WD-40® Specialist® Rust Release Penetrant Spray


I used this product on my boat to prevent corrosion that may occur from marine activity. The product performed exceptionally well and adequately prevented corrosion

Preston K.
High Point, NC

After removing ring ridge and re-honing the cylinder bores in my engine block, I used it to prevent rust and corrosion. It worked perfectly. The product did exactly what it advertised.

Nicholas G.
Automotive Technician
Las Vegas, NV




WD-40 Multi-Use Product Family
WD-40 Specialist Long-Term Corrosion Inhibitor, 6.5 oz. 5 5 3 3
I'm glad it's available! I've used regular WD-40 as a rust preventer for 30 years, so I was really happy to see "WD" come out with their "Specialist" line of products, including the new Long-Term Corrosion Inhibitor. So far, my experience with this product has been 100% positive! January 9, 2013
Time Will Tell! I'm excited to see this product at my local AutoZone, I wasn't aware of it until today but like most guys I use WD-40 extensively. I did a test of several different gun oils/corrosion inhibitor's last winter. I resurfaced the blocks and am running my test again this winter. I bought a can of WD-40 Corrosion Inhibitor today so I can add it to the mix. So far I'm going to put a heavy coating of each treatment on separate blocks, allow to dry overnight, apply a second heavy coating and then set outside in the grass for a 3 month Michigan winter torture test. Should be interesting! I probably can't post the link here to the facebook page I started to publish the results/details, but if you search facebook for "firearms CLP corrosion tests" you'll probably find it and I will add your request. I hope the WD-40 Long-Term Corrosion Inhibitor wins it all since it's easy to find close to my house! December 14, 2012
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. November 21, 2012
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