Ultrapro MSP Sprayable Seam Sealer

3M™ Ultrapro™ MSP Sprayable Seam Sealer (Part Number 8374)

1. Key Features:

Versatile Application: This high-solids, moisture-curing seam sealer can be applied as a bead, sprayed seam, or sprayed coating, offering flexibility in achieving various aesthetic appearances.
Modified Silane Polymer Technology: Utilizes a modified silane polymer formulation for superior adhesion and durability.
Fast Curing: Features a rapid cure time, allowing for immediate paintability and minimizing project downtime.
Low Solvent Content: Formulated with a very low solvent percentage, reducing volatile organic compound (VOC) emissions and associated health concerns.
Excellent Adhesion: Provides excellent adhesion to primed metal and aluminum substrates.
Extended Shelf Life: Maintains usability for an extended period compared to standard seam sealers.
Solvent Compatibility: Remains unaffected by alcohol-containing solvents.

2. Applications:

Suitable for a wide range of automotive sealing and sound deadening applications, including:

3. Benefits:

Cost Savings: The versatility of this product eliminates the need for multiple sealants, reducing inventory and storage costs.
Improved Efficiency: Fast curing time minimizes waiting periods before painting, accelerating the overall production process.
Reduced Rework: Excellent adhesion and solvent compatibility minimize the risk of bond failure and rework.
Enhanced Health & Safety: Low solvent content reduces exposure to VOCs, improving worker safety and minimizing unpleasant odors.
Extended Product Life: Longer shelf life reduces waste due to product expiration.

4. Specifications:

Part Number: 8374
UPC: 51135083741
Container Type: Cartridge
Container Capacity: 310 mL (10.5 fl oz)
Color: Gray
Chemical Composition: 15-40% Limestone, 10-30% Inorganic Filler 2, 10-30% Silyl Terminated Polyether, 5-10% Non-Phthalate Plasticizer, 3-7% Calcium Carbonate, 1-5% Dibutyl Phthalate, 1-5% Hydrocarbons (C11-C12 isoalkanes, 2% aromatics), 1-5% N-ETHYL-P-TOLUENESULFONAMIDE, 1-5% Inorganic Filler 1, 0.1-2% Stearic Acid, 0.5-1.5% N-Me 2-Pryrrolidone, 1% 1,2-Ethanediamine, N1-[3-(trimethoxysilyl)propyl]-, 0.5% Quartz Silica.
Work Time: 5-10 minutes
Cure Time: 24 hours
Flash Point: 144°F
Density: 1.4-1.6 g/cm³
Viscosity: 140,000 cP
Temperature Rating (Service): -20°F to 200°F