Camco's Self-Leveling Roof Sealant creates a strong seal along your RV's roof edges, vent pipes and air vents. It is designed for sealing EPDM rubber, TPO, fiberglass, wood, aluminum, steel or masonry. The sealant is easy to apply and intended for horizontal applications. Product is formulated for ¼-inch and 3/8-inch beads. Size: 10.1 fl. oz. (300 mL).