3M
3M 8399 1-Part Flexible Package Applicator Gun Pneumatic 310 mL Black
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Overview
Built for the job.
Versatile and valuable tool used in variety of repair applications, our 3M™ flexible package applicator gun is an essential tool for any auto body shop. This applicator is used to apply seam sealers to automotive seams and joints and is made to fit 310 mL packages. It delivers a steady stream of semi-liquid…
Why Pros Choose 3M 1-Part
- Made with all metal components to withstand years of use and rugged working conditions
- Rod driven, friction feed delivers a smooth and steady stream of automotive sealant and urethane
- Designed to fit flexible foil packages of 310 mL or smaller
- Fully enclosed case makes package changes quick and easy
- This tool has a 12:1 dispersion ratio
How to Use
For applying body filler, use with 3M™ windshield urethanes, 3M™ urethane and MSP seam sealers
Compatibility
Compatible substrates: Fiberglass.
Compatible paint systems: Urethane.
Specifications
| Part No. | 8399 |
|---|---|
| Product Line | MMM |
| Application | For applying body filler, use with 3M™ windshield urethanes, 3M™ urethane and MSP seam sealers |
| Manufacturer | 3M Products |
| UPC | 051135083994 |
| Brand | 3M™ |
| Capacity (mL) | 310 |
| Power Source | Pneumatic |
| Type | 1-Part |
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 surfaces can 3M MMM be used on?
3M MMM is compatible with Fiberglass. Always ensure the surface is properly cleaned, degreased, and sanded before application to achieve the strongest adhesion and a professional finish.
How fast does autofxmart ship 3M MMM?
Most in-stock orders for 3M 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.
Is this 3M product genuine?
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.
What is the manufacturer part number (MPN) for 3M MMM?
The MPN for 3M MMM is 8399. Use this number when cross-referencing against TDS, SDS, or legacy supplier catalogs.
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.
Specifications
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