Sikaflex-221 Caulk is a polyurethane sealant/adhesive that provides permanent elastic adhesion to a number of surfaces with excellent cut and tear resistance. Perfect for use on RVs, trucks, buses, and trailers, this fast-curing caulk is specially formulated to resist the shock and abuse encountered over countless road miles. Sikaflex-221 is weather-resistant, sandable, paintable, and NSF-approved for potable water and incidental food contact. SPECIFICATIONS:* Weight: 1 lb.* Manufacturer: AP Products* Model#: 017-90891 For use on RVs, trucks, buses, & trailers Resists shock & abuse of countless road miles Weather-resistant, sandable, paintable | AP Products Sikaflex 221 Caulk - White