Polyvance's low VOC Bumper & Cladding Coat Adhesion Primer is an advanced, low-VOC solvent based coating system designed to help you automotive base-clear topcoat system stick to TPO, TEO, and polypropylene plastic bumpers covers. Bumper & Cladding Coat Adhesion Primer sticks to unsanded, unscuffed raw TPO, TEO, and polypropylene plastic. Once the Adhesion Primer is dry, it can be topcoated without sanding or scuffing.