3M Urethane Seam Sealer, 08368, White, 310mL Cartridge, 12 per Case

• GAP-FILLING CONSISTENCY: Thick consistency enables the filling of large voids while helping to prevent corrosion
• MOISTURE CURING PROPERTIES: Provides excellent performance in high-heat and humid environments
• PAINTABLE IN MINUTES: Work faster using a sealer that is paintable in just 30-45 minutes
• PERMANENT ELASTICITY: A non-shrinking, non-cracking, low-to-no odor formula remains flexible and offers superior results to solvent-based sealers
• SEAL YOUR WAY: Can be smoothed to a featheredge or brushed
• VERSATILE APPLICATION: A high-quality, single-component formula adheres well to bare metal, primed metal, and painted surfaces

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 30-45 minutes, this urethane formula is permanently flexible and offers superior performance to solvent-based sealers.

Create Tight, Long-Lasting Seals
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.

Fill in Gaps with Confidence
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. Note that the sealer should be top coated when exposed to ultra violet rays.

Excellent Performance in High Heat and Humidity
While some seam sealers require cure time in a completely dry environment, our 3M™ Urethane Seam Sealer is moisture-curing so it provides a reliable seal regardless of moisture or humidity in the air. It can be painted after 30-45 minutes.

Rigid or Flex Pack Options
This sealer comes in either a flexible foil pack or rigid metal cartridge. Application of the cartridge sealer requires the use of a 3M™ Single Component Cartridge Applicator Gun - pneumatic (08990) or 3M™ Professional Caulking Gun (08993), and 3M™ Threaded Cartridge Nozzles (08187).  Foil packs are designed for use with 3M™ Flexible Package Applicator Gun - Pneumatic (08399) or 3M™ Flex Pack Applicator (08398) these include one applicator nozzle, additional nozzles may be acquired as PN (08188).

3M Science Meets the Needs of Automotive Professionals
3M™ Urethane Seam Sealer was formulated for general repairs that require long-lasting hold, easy curing, and appearance matching. 3M™ Urethane Seam Sealer is ideal for lasting seam sealing protection on many different surfaces, including bare metal, and allows technicians to expertly recreate OEM appearances. This expert formula represents another way that 3M applies scientific knowledge and ingenuity to the automotive industry.

Trusted 3M Urethane Seam

The 3M Urethane Seam Sealer, model 08368, offers reliable sealing for automotive and RV applications. This white sealer comes in a 310mL cartridge, providing a consistent and durable solution for seams and joints.

Its thick consistency fills gaps effectively, helping to prevent corrosion. The sealer adheres well to bare metal, primed metal, and painted surfaces, ensuring a strong bond for lasting protection.

Gap Filling Consistency Benefits

This 3M urethane sealer features a thick, gap-filling consistency that makes it ideal for sealing large voids. Its formulation prevents shrinking and cracking, maintaining a permanent elastic seal over time.

Available in a 12 per case pack, the cartridge format supports efficient application with professional caulking guns, making it suitable for both small and large projects.

Fast Paintable Drying

The sealer becomes paintable within 30 to 45 minutes, allowing faster project completion without long wait times. This quick curing time is especially useful in busy automotive repair environments.

Its moisture-curing properties ensure excellent performance even in high heat and humid conditions, maintaining a reliable seal regardless of the environment.

Flexible Application Options

The 310mL cartridge format of the 3M Urethane Seam Sealer is compatible with various applicator guns, including pneumatic and professional caulking guns. This flexibility helps users apply the sealer smoothly and precisely.

It can be smoothed to a featheredge or brushed on, allowing customization of the finish to match the specific needs of each seam or joint.

Durable Long-Lasting Protection

3M’s urethane formula offers permanent elasticity with low-to-no odor, outperforming solvent-based sealers. This ensures seams remain sealed without cracking or shrinking over time.

Packaged in a 12 per case quantity, this sealer supports multiple repairs or large-scale projects, making it a practical choice for professionals seeking consistent, high-quality results.