Self Etching Primer 15oz Aerosol

The POR-15 Self Etching Primer 15oz Aerosol is a professional-grade urethane primer engineered for bare metal preparation and rust prevention on automotive surfaces. Designed for mechanics and restoration enthusiasts tackling everything from engine bay work to full-body repairs, this self-etching formulation eliminates the need for separate etching steps, saving time while ensuring superior adhesion. The 15oz aerosol canister delivers consistent, controllable spray coverage ideal for detail work, panel repairs, and precision applications where traditional brush-on primers fall short.

Self-etching primers chemically bond to bare metal by microscopically etching the surface, creating mechanical and chemical adhesion that standard primers cannot achieve—critical for long-term rust prevention and paint durability. The urethane chemistry in this formulation provides excellent corrosion resistance, moisture barrier properties, and flexibility once cured, preventing adhesion loss and cracking under temperature cycling and vibration. Gray color provides optimal coverage visibility and base for both single-stage and multi-coat systems, while the aerosol delivery method ensures even atomization and penetration into seams, crevices, and welded areas that brushes cannot reach effectively.

Professionals rely on this primer for frame repairs, floor pan replacement, turret welding touch-ups, and any bare metal exposure where rust protection is non-negotiable. The aerosol format excels in confined engine compartments, under-vehicle work, and restoration shops where spray equipment isn't practical. Compatible with all automotive topcoats—urethane, acrylic, and epoxy systems—it bridges the critical gap between bare metal and final finish, ensuring paint adhesion and corrosion protection that define a quality repair.