• Attached straw targets spray on small areas
  • Breaks down rust and corrosion bonds
  • Great on metal, plastic, and rubber
  • Helps prevent rust from forming
  • VOC compliant in 50 states
UPC Code: 079567300007
Not eligible for expedited shipping

Other Products from this Line

Chemical Form Spray
Made in America Yes
NSF Listed Yes
Package Size 11 oz.
Type Lubricants

Customer questions about this product

Can I use this product on all surfaces?
No, this product is not for use on food-contact surfaces, polycarbonate, or clear polystyrene surfaces.
Ask your own question!


Blast away rust and corrosion with WD-40 Specialist rust release penetrant spray! This powerful lubricant comes in a convenient 11 oz. bottle with built-in Smart Straw - simply flip the straw up to direct a precision stream onto small areas, or flip the straw down for a wider regular spray.

WD-40 Specialist rust release penentrant spray boasts Blu Torch technology, a special blend of synthetic additives that breaks down rust on nuts, bolts, threads, locks, chains, and other plastic, rubber, or metal parts. The spray penetrates into crevices, threads, and seams to break down the bonds causing parts to stick and leaves behind a protective layer to help prevent new rust or corrosion from forming. It is VOC compliant in all 50 states.

Due to US DOT shipping regulations, we are unable to ship this product to Alaska, Hawaii, and international destinations. It is also ineligible for next day or second day shipping.

Attention CA Residents: Prop 65 Warning

  • NSF Listed

    NSF Listed

    This item meets the standards imposed by NSF International, which focuses on public safety, health, and the environment.

  • Made in America

    Made in America

    This item was made in the United States of America.

Resources and Downloads

Technical Data Sheet Specsheet SDS SDS

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Customer Reviews

  • Overall User Rating: WD-40 300004 Specialist 11 oz. Rust Release Penetrant Spray with Smart Straw

    5.0 stars from 6 reviews


    People Talk About:

    great spray Straw bolts easy release works love penetrant remove
    I've used this for a few years around my house to help with loosening stuck bolts and screws. As a band teacher, I have also used this to loosen frozen metal parts on instruments.
    This rust release WD-40 is fantastic it works great on those stuck on bolts and such things that get rusted on great product to have on this website I love the straw to it makes it easy to aim rate at the bolts
    I love this rust release penetrant spray! It works great just within the seconds! And application is so easy with optional smart straw! Great product for anyone!
    This is a great WD-40 product. Its got a great nozzle which can spray in a mist or thru the straw. Works really well on rust
    Sir Clean recommend this product WD-40 Specialist 11 oz. Rust Release Penetrant Spray with Smart Straw - 6/Case, because it's a powerful lubricant. We like it
    I really like the specialist line from WD-40. This has a nice and accurate spray. It really helps to remove the rust making it easy to remove rusted bolts. Great product.

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