3M
3M Cavity Wax Plus 8852 18 oz Can Opaque
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Hazardous material · Liquid
Liquid hazmat ships ground-only via UPS/FedEx with a per-item carrier surcharge applied at checkout.
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Ground freight only (UPS/FedEx). Cannot ship via Air, USPS, or to PO boxes. APO/FPO addresses excluded.
WARNING: Cancer & Reproductive Harm
California Pro65 Warning: Cancer
Tap for details → P65Warnings.ca.gov
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Overview
Built for the job.
3M™ Cavity Wax Plus 08852 is a non-hardening, self-healing corrosion protection coating for internal auto body panels and structural enclosures, as well as new replacement parts. It is designed to cover and seal internal joints, hem flanges and other areas where OEM e-coat may be compromised. It will not chip, peel or…
3M Cavity Wax Plus (part number 08852) is a corrosion‑protective coating designed for sealing cavities, seams, and hard‑to‑reach areas on a vehicle body before final paint application. The opaque, 18‑oz aerosol provides a reliable barrier against moisture and salts that can cause rust on a wide range of substrates.
The formulation adheres to ABS, aluminum, bare metal, e‑coat, fiberglass, FRP, galvanized steel, OEM panels, plastics, primers, SMC, and steel, delivering 10–13 uniform coats per can when applied according to the recommended technique. This high coverage reduces the number of cans needed for large repair jobs while ensuring consistent protection throughout the cavity.
Because the product contains acute toxicity, aspiration, and flammability hazards, proper personal protective equipment is required: safety glasses or goggles, protective clothing, and a respirator. Apply in a well‑ventilated area and follow the safety data sheet for first‑aid procedures in case of inhalation, skin contact, eye exposure, or ingestion.
Why Pros Choose 3M MMM
- Corrosion protection for internal body panels, frame rails and structural enclosures
- Non-hardening material remains soft and pliable will not crack, chip, or peel
- Use with 3M™ Cavity Wax Plus applicator wand kit (sold separately) to ensure 360 deg coverage in closed cavities
- Convenient aerosol spray can eliminates need for bulk spray equipment
- Self-healing formula reflows into cracks and crevices for long-term coverage
- All OEMs recommend the application of internal anti-corrosion material during body repair, which includes cavity wax
- 3M™ Cavity Wax Plus delivers the right amount of flow and wicking, providing consistent and uniform protection for your repair
- Eliminates the need for using antiquated and messy bulk spray technology to apply corrosion protection to a vehicle
- Provides access to inner body structures with tight tolerances
How to Use
For anti-corrosion and surface coatings
- Clean and prep the substrate (ABS, aluminum, bare metal, e‑coat, fiberglass, FRP, galvanized, OEM, plastic, primer, SMC, steel) to remove contaminants and ensure a sound surface.
- Apply the coating with the recommended method, building 10 – 13 coats as specified.
Compatibility
Compatible substrates: E-Coat.
Specifications
| Part No. | 8852 |
|---|---|
| Product Line | MMM |
| MFR Model | 08852 |
| Standard/Approvals | California Pro65 Warning: Cancer |
| Application | For anti-corrosion and surface coatings |
| Manufacturer | 3M Products |
| Trade Mark | Cavity Wax Plus |
| Alternate Part Number-1 | 60455085443 |
| UPC | 051135088524 |
| Brand | 3M™ |
| Maximum Sale Quantity | 4 |
| Maximum Sale Day | 7 |
| Rubberized | No |
| Color | Opaque |
| Container Size (oz) | 18 |
| Container Type | Can |
| Form | Liquid |
- Substrates
- ABS, aluminum, bare metal, e‑coat, fiberglass, FRP, galvanized, OEM, plastic, primer, SMC, steel
- Coats
- 10–13
About 3M
3M is a global leader in abrasives, masking, and body repair products. Trusted by OEM collision centers for high-performance prep and finishing solutions.
Frequently Asked Questions
What substrates can 3M Cavity Wax Plus be applied to?
It is compatible with a wide range of substrates, including ABS, aluminum, bare metal, e‑coat, fiberglass, FRP, galvanized steel, OEM‑finished surfaces, various plastics, primers, SMC, and steel.
What personal protective equipment is required when applying this coating?
Use eye protection, protective clothing, and a respirator as mandated by the SDS. The product also presents hazards such as eye damage, skin corrosion, inhalation toxicity, and flammability.
How many coats are typically needed for full corrosion protection?
The recommended application is 10 – 13 coats to achieve the specified level of corrosion protection.
Documents & Safety
DANGER: Flammable aerosol with extremely low flash point (50°F). Contains materials that may cause cancer, reproductive harm, and organ damage. Can cause serious eye damage and respiratory irritation. Required PPE: safety glasses, protective clothing, and respirator. Keep away from heat, sparks, and open flames. Use only in well-ventilated areas. Avoid skin and eye contact. Do not puncture or incinerate container. Always refer to the full SDS before use.
Why Buy from autofxmart
- Authorized distributor — authentic, factory-fresh stock.
- Fast US shipping — most orders ship within 1 business day.
- 30-day returns — buy with confidence.
- Pro-shop pricing — bulk discounts available on request.
- Expert support — questions? Email us at support@autofxmart.com.
How to apply
Steps
1Clean and degrease the surface, then scuff as needed.
2Mask off surrounding panels and trim.
3Mix to the product's ratio and strain.
4Apply 2–3 even coats, flashing between each.
5Let cure fully before sanding, buffing, or assembly.
Specifications
Full data
Frequently asked
Good to know
3M Products MMM is compatible with E-Coat. Always ensure the surface is properly cleaned, degreased, and sanded before application to achieve the strongest adhesion and a professional finish.
This listing ships 3M Products MMM in a 18 (CN) container. Check the autofxmart catalog for other sizes and bulk pricing.
Most in-stock orders for 3M Products MMM ship the same or next business day from our US warehouse. Expedited options are available at checkout. Freight-class items may require an additional 1–2 days for carrier pickup.
Yes. autofxmart is an authorized distributor of 3M Products. Every unit is factory-fresh, sealed, and backed by the manufacturer's standard warranty. If you have a concern, contact support@autofxmart.com and we will make it right.
The MPN for 3M Products MMM is 8852. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
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