PPG's SEAL GRIP^® Gripper^® Universal Primer/Sealer is especially formulated to block most stains: water, smoke, ink, markers, and tannin. SEAL GRIP^® Gripper^® Universal Primer/Sealer has exceptional adhesion to glossy surfaces. It is also recommended as a whole-house primer for use on properly prepared interior or exterior wood, masonry, plaster, wallboard, cement, brick, stucco, cement composition board, aluminum, and wall coverings.