SEM Products 39683 Self Etching Primer Gray 20 oz Aerosol Can

SEM Products 39683 Self Etching Primer in Gray is a professional-grade, aerosol-applied primer designed to chemically bond to bare metal, aluminum, and fiberglass substrates. Its etching formula bites into bare surfaces to create a superior foundation for topcoats, delivering outstanding corrosion resistance and long-term adhesion where standard primers fall short.

Key Features:

• Self-etching formula provides excellent adhesion to bare metal, aluminum, and fiberglass
• Chemically bonds to substrates for superior corrosion resistance
• Gray tint offers a neutral base suitable for a wide range of topcoat colors
• Ready-to-topcoat surface minimizes prep time between coats
• Convenient 20 oz aerosol can for easy, controlled application
• Compatible with most automotive lacquer, enamel, and urethane topcoats

SEM 39683 is ideal for use in automotive body repair, restoration, and refinishing applications where bare substrate preparation is critical. Its fast-drying aerosol formula makes it well-suited for both professional body shops and serious DIY enthusiasts looking for reliable, long-lasting primer performance.