40977 SOUND & SEAL SPRAYABLE COATING is a two component epoxy/urethane blend designed to duplicate the original sealer appearance on trunk floor sections, inner wheel openings, floor pans, undersides of rocker panels and frame rail sections. 40977 coats interior or exterior seams and joints and retains its flexibility. 40977 will not shrink, harden or crack and may be painted in 30 minutes, reducing cycle time.