SEAL GRIP® Gripper® Universal Primer/Sealer is a high-performance primer specially formulated to block most common stains, including water, smoke, ink, markers, and tannins. Designed for exceptional adhesion, it bonds strongly to glossy surfaces, ensuring a durable foundation for topcoats. Ideal for both interior and exterior use, this versatile primer is recommended for properly prepared wood, masonry, plaster, wallboard, cement, brick, stucco, cement composition board, aluminum, and wall coverings—making it the perfect whole-house priming solution.