Ultra Flex® sprayable seam sealer is an iso free multi purpose sprayable sealant. It may be applied by caulking gun or spray equipment and is easily extruded and tooled. Ultra Flex® sprayable seam sealer is a moisture curing sealant developed for automotive and industrial applications requiring elasticity, high strength and excellent adhesion. The product is tough, elastic and waterproof. It bonds aggressively to steel, aluminum, galvanized metal, fiberglass, urethane, epoxy, polyester, water based primers, glass, Styrofoam® and many plastics.