Titebond Acoustical White Elastomeric Silicone Smoke and Sound Sealant 28 oz (Pack of 12)Titebond GREENchoice Professional Acoustical Smoke & Sound Sealant is a non flammable, latex based product designed specifically for the reduction of sound transmission in wall partition systems. Its primary function is to achieve and maintain the specific STC (Sound Transmission Class) value of the system designed. GREENchoice Acoustical Smoke & Sound Sealant remains permanently flexible and adheres firmly to wood or metal studs, concrete, gypsum