Permatex 81849; Extend Rust Treatment 16 Oz.
Permatex 81849; Extend Rust Treatment 16 Oz.
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Permatex

Permatex 81849; Extend Rust Treatment 16 Oz.

|7 ratings

Key item features

  • Effortless Application: This rust treatment is easily applied by either brushing or spraying, simplifying the process for various automotive applications.
  • Rapid Transformation: Within minutes of application, existing rust is destroyed and replaced by a durable black polymer coating.
  • Protective Primer: The resulting black polymer coating serves as an excellent protective primer, ready for painting.
  • Versatile Compatibility: Specifically formulated for use with body filler and fiberglass, enhancing its utility in repair projects.
  • Optimal Conditions: For best results, the product should be used when temperatures are between 50 and 90 degrees Fahrenheit.
  • Generous Volume: Each container provides 16 ounces of the rust treatment in an aerosol format.
  • Dual Action: This one-step treatment effectively destroys old rust while simultaneously preventing the formation of new rust.
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Current price is $15.98
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Sold by Kwik Retail
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4.501327580484567 stars out of 5, based on 6032 seller reviews(4.5)
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4.1 out of 5 stars
stars7 ratings6 reviews
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Showing 1-3 of 6 reviews

Feb 13, 2026
Jackie
Sold byKwik RetailDelivered byWalmart
5 out of 5 stars review

Verified Purchase

A New Uses for Permatex Rust Treatment

Permatex Rust Treatment was recommended to us to spray on the wires under my car hood to keep the mice from chewing on our wires. So far it has worked!

Incentivized Review
Helpful?2GCAYT34VRW432930768
Apr 18, 2026
Troy
Sold byKwik RetailDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Best rust neutralizer and protector I've ever used

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Helpful?2GCAYT34VRW432930768
Nov 13, 2025
Walmart customer
Sold and shipped byJBTools
5 out of 5 stars review

Verified Purchase

Good stuff!

Been using for years. Works great!

Incentivized Review
Helpful?2GCAYT34VRW432930768