690 Damping sheet is a type of solvent-free, non- ... is made from high quality rubber. 1, Dscription 690 Damping sheet is a type of solvent-free, non-spoliation sheet ... so on, and it is one of the best damping, reinforcement, noise reducing material. 2, Application area Sealing ... , damping, heat insulation for auto body, auto air-condition, floor ...