Non-flammable, water-based product developed specifically for the reduction of sound and smoke transmission in all types of wall partition systems. Easy application and easy cleanup. Used correctly and as directed, sealant will achieve and maintain specific STC (Sound Transmission Class) values specified for various wall system designs. This product should be used in office buildings, sound studios, hospitals, schools, hotels and motels, apartment complexes, and other areas where sound smoke ratings are required. This sealant is also ideal for sealing out air infiltration and unwanted moisture in residential construction.