The primer DINITROL 538 PLUS is a “one-step primer” with additional functions for glass bonding with polyurethanes. It is a primer developed as a pretreatment for the replacement of polyurethane direct glass automotive parts and other substrates. DINITROL 538 PLUS is a solvent-based, physically and chemically drying black primer that promotes adhesion between the glass/ceramic surface and the glass adhesive and provides UV protection.