Gray Primer Sealer M103 is a high-performance, single-component (1K) primer sealer formulated to provide superior adhesion, coverage, and surface uniformity on a variety of substrates including metal, fiberglass, and previously painted surfaces. Its neutral gray tone offers excellent color holdout for topcoats, making it an ideal base layer for achieving a smooth and durable finish.
Engineered for use in both automotive and industrial refinishing, the M103 delivers fast drying times, excellent sanding characteristics, and reliable corrosion resistance. Whether you’re performing spot repairs or prepping a full panel for paint, this primer sealer enhances finish quality and minimizes topcoat absorption. Easy to apply with a spray gun and designed for high-build or sealer applications, Gray Primer Sealer M103 is trusted by professionals for dependable results and long-term durability.
