SEM 39693 Self-Etching Primer, Green (16 oz) is a professional acid-etch primer for bare metal preparation in automotive collision repair. The acid-etch chemistry chemically bonds to bare steel, aluminum, and galvanized metal substratesproviding molecular-level adhesion that mechanical bite alone cannot match. No separate metal conditioner or conversion coating step required: SEM Self-Etching Primer treats, conditions, and primes the metal surface in a single application.
Aerosol format delivers ready-to-spray convenience for spot repairs, weld zones, and bare metal touchup without gun setup or cleaningthe fastest way to prime small bare metal areas in production repair workflows. Green-colored formula an alternative to gray/black for specific OEM color-match requirements. Compatible with waterborne and solvent-borne topcoat systems.
- Color: Green
- Size: 16 oz
- Type: Single-Component Self-Etching Primer
- Substrates: Bare steel, aluminum, galvanized metal
- Application Method: Aerosolshake and spray
- Topcoat Compatible: Waterborne and solvent-borne systems
- Country of Origin: USA
- Part Number: 39693
SEM Self-Etching Primer is a core shop supply for any collision center performing bare metal repairs. Available in aerosol, quart, and gallon sizesstock all three formats for maximum workflow flexibility.








