3M 08374 MSP Sprayable Seam Sealer (Grey, 10.5oz) is a professional-grade automotive seam sealer engineered for structural and cosmetic seam sealing in collision repair. Sprayable formula applies by spray gun or aerosol over large seam areas — ideal for rocker panels, floor pans, and any area requiring full-coverage seam protection across wide surfaces.
MSP chemistry provides superior long-term adhesion to bare metal, e-coated, primed, and painted substrates with the flexibility to resist cracking from panel vibration and thermal cycling throughout the vehicle’s service life. Grey-colored formula matches common OEM seam seal color profiles for a factory-appearance repair. Paintable after proper flash time — finish with any topcoat system.
- Type: MSP Sprayable Seam Sealer
- Color: Grey
- Volume: 10.5oz
- Application: Spray gun / aerosol
- Substrates: Bare metal, e-coat, primer, painted surfaces
- Paintable: Yes, after flash time
- Country of Origin: USA
- Part Number: 08374
Part of 3M’s comprehensive seam sealer line covering every seam type and application requirement. Match the flow type to the seam orientation — self-leveling for horizontal, heavy-bodied for vertical and overhead. Sold individually.
