Wolfgang Concours Series WG-3000 Exterior Trim Sealant, 8 fl. oz. Wolfgang Exterior Trim Sealant is a special blend of clear polymers, UV blockers, and a rust inhibitor that shields exterior trim from the sun and weather. Wolfgang Exterior Trim Sealant works equally well on metal wheels, tires, metal grills, plastic wiper cowls, textured bumpers and smooth wheel well guards. Wolfgang Exterior Trim Sealant will give plastic, vinyl, and rubber a darker, newer appearance.