- New
862147 is a Lippert Alpha Systems 1021 low-VOC self-leveling lap sealant in gray, supplied in a 10.3 oz tube. Designed for horizontal RV applications, it is suitable for compatible roof surfaces and areas around vents, antennas and skylights. The sealant helps prevent air and moisture intrusion, is formulated to withstand outdoor weather conditions and can be painted once fully cured. A standard caulking gun can be used for application.