3M.8367 1-Component Seam Sealer, 310 mL Dual Cartridge, Paste, Black, 24 hr Curing

3MSKU: 3M.8367

Sale price$31.70

Shipping calculated at checkout

In stock


Product Description

Our 3M™ urethane seam sealer is a high solids seam sealer ideal for sealing automotive and RV seams and joints. It adheres well to bare metal, primed metal and painted surfaces and if desired can be smoothed to a featheredge and/or brushed. Tack-free and paintable after 30 to 45 min, this urethane formula is permanently flexible and offers superior performance to solvent-based sealers. 3M™ urethane seam sealer is an excellent choice when sealing interior or exterior seams to help prevent the intrusion of water, dust and air, aiding in providing corrosion-resistance at these locations. Choose this seam sealer for high quality sealing of seams and joints on primed metal or painted surfaces and even on bare metal. It applies easily and is formulated for long-lasting support to the seam without shrinking, cracking or causing unpleasant odors. With its thick consistency, our 3M™ urethane seam sealer is an excellent gap sealer and you can feel confident using this sealer to fill large voids between parts where they occur. Designed to be used over epoxy or urethane based primers, the sealer comes in several colors to enable color matching.


  • High quality, single-component formula adheres well to bare metal, primed metal and painted surfaces
  • Moisture curing property provides excellent performance in high heat and humidity environments
  • Non-shrinking, non-cracking, low/no odor formula remains flexible and offers superior results to solvent-based sealers
  • Paintable after 30 to 45 min
  • Thick consistency is able to fill large voids
  • Can be smoothed to a featheredge or brushed
  • Recommended for use with 3M™ single-component cartridge applicator gun PN08990 or 3M™ professional caulking gun PN08993


More Information
Part No. 8367
Product Line MMM
MFR Model 08367
Standard/Approvals California Pro65 Warning: Cancer and Reproductive Harm
Application For adhering floor coverings, bare metal, door hem flanges, door jambs, door skins, exterior seams and joints, fastening headliner and ceiling systems, floor pans, galvanized, general-purpose, interior seams and joints
Manufacturer 3M Products
Alternate Part Number-1 60455054621
UPC 051135083673
Brand 3M™
Applicable Materials Bare Metal, Primed Metal, Painted Surfaces
Composition 15 to 40% Urethane Polymer, 10 to 30% PVC, 10 to 30% Sulfonic Acids, C10-18-Alkane, Ph Esters, 5 to 10% Xylene, 1 to 5% Calcium Oxide, 1 to 5% Ethylbenzene, 0.5 to 1.5% Hydrotreated Light Petroleum Distillates, 0.1 to 1% Carbon Black, 0.1 to 1% P,P'-Methylenebis(Phenyl Isocyanate)
Application Time 10 min
Paintable (Y/N) Yes
Specific Gravity 1.17
Base Type Urethane
Component 1K
Odor/Scent Solvent
Color Black
Container Size (mL) 310
Flash Point 92 deg F
Container Type Dual Cartridge
Form Paste
Temperature Rating (deg F) >200 deg C Autoignition, -25 to 180
Type 1-Component
Curing Time 24 hr

Payment & Security

Amazon American Express Apple Pay Diners Club Discover Meta Pay Google Pay Mastercard PayPal Shop Pay Venmo Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Estimate shipping

You may also like

Recently viewed