SEM Grey Self-Etching Primer – 39683 is for spot repairs or overall refinishing, SEM Grey Self-Etching Primer adheres to steel, aluminum, and stainless steel. SEM Products formulated them for use under primer surfacers and with most paint systems. These easy-to-use primers offer superior adhesion and excellent coverage and sand quickly. Prepare your auto project for maximum smoothness–shake and spray SEM self-etching primers.
