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Home > Paint & Body > Rust-Proofing for Internal Panels | Cavity Wax |

3M™ Cavity Wax PLUS and SEM 39574 are two options for applying a non-hardening corrosion protection coating for internal to inner body panels, dog legs, uniside constructions, frame rails, and similar areas.



A non-hardening corrosion protection coating for internal cavities in a quart can. Also known as a cavity wax. Designed to provide a self-healing, corrosion protective coating for inner body panels and frame rails.

3M Rust Fighter has been DISCONTINUED BY 3M.



3M™ Cavity Wax Plus, 18.7 oz, 08852
3M™ Cavity Wax Plus Applicator Wand Kit, 08851
3M Rust Fighter-I Application Wand 08998 This item has been DISCONTINUED by Mfr
Astro Undercoat Applicator
3M™ Cavity Wax Plus, 18.7 oz, 08852


Availability: Usually ships the same business day

3M™ Cavity Wax Plus, 18.7 oz, 08852
08852$22.96
3M™ Cavity Wax Plus Applicator Wand Kit, 08851


Availability: Usually ships the same business day

3M™ Cavity Wax Plus Applicator Wand Kit, 08851
08851$25.99
3M Rust Fighter-I Application Wand 08998 This item has been DISCONTINUED by Mfr

3M Rust Fighter-I Application Wand 08998 This item has been DISCONTINUED by Mfr

Astro Undercoat Applicator


Availability: Usually ships the same business day

Astro Undercoat Applicator
AST-4538$15.29
3M Body Schutz Applicator Gun, 08997, 3M Rust Fighter-I  Quart Applicator Gun
UFO Sheet Metal Plugs, Black Plastic Recessed Center, 1/2" hole, 9 pieces/pak
UFO Sheet Metal Plugs, Black Plastic, Flush- mount, 1/2" hole, 12 pieces/pak
UFO Sheet Metal Plugs, Black Plastic, Flush- mount, 1/2" hole, 75/pak
3M Body Schutz Applicator Gun, 08997, 3M Rust Fighter-I Quart Applicator Gun


Availability: Usually ships the same business day

08997$105.24
UFO Sheet Metal Plugs, Black Plastic Recessed Center, 1/2" hole, 9 pieces/pak


Availability: Usually ships the same business day

3058r$3.49
UFO Sheet Metal Plugs, Black Plastic, Flush- mount, 1/2" hole, 12 pieces/pak


Availability: Usually ships the same business day

7321r$3.49
UFO Sheet Metal Plugs, Black Plastic, Flush- mount, 1/2" hole, 75/pak


Availability: Usually ships the same business day

UFO Sheet Metal Plugs, Black Plastic, Flush- mount, 1/2" hole, 75/pak
7321TP$15.10