3M 04274 ~ Noise, Vibration & Harshness Dampening Material black/clear, 6.8 fl. oz. (200 ml)3M Noise, Vibration & Harshness Dampening Material, 04274, black clear, 6. 8 fl. oz. (200 ml) 3M NVH Dampening Material is a flexible urethane adhesive type material for replacing and re installing factory NVH sealants and foams This two part material can be used to coat existing foams before reinstallation of outer body panels, or to fill thin gaps where foam cannot be used Great for overhead or vertical surfaces, it cures to a flexible yet firm