- New
551LSB-1 is a Dicor non-sag lap sealant designed to create a secondary watertight seal along RV roof edges, termination rails, air vents, vent pipes and screw heads. This black sealant is compatible with EPDM, TPO and PVC roofing membranes and adheres to surfaces such as aluminum, fiberglass, galvanized metal, wood and concrete. The 10.3 oz tube provides a practical solution for RV roof maintenance and sealing applications.