PU Seam Sealer Car Body Panel Joint Adhesive 310ml. PU polyurethane sealer, large 310ml tube, perfect adhesion to all hard plastics, metal, and fiberglass. PU Sealer has a good elasticity/ flexibility and will not crack on plastic, fibre glass body kits This PU Sealer is perfect on spoilers and panels, bonnet scoops and vents, wheel arches and panels, and as its easy to brush can be used on boot floors, joints, seams and sills, Has a very good body so can be used to fill gaps. Over paintable in 30 mins. Supplied in White. We stock a number of different PU sealers, the one that you receive may not be the same as in the picture, but they all come in a 310ml tube with a nozzle. This is for 1 x 310ml tube.