The sealant should be used for exposed and unexposed applications at perimeter joints, floor and ceiling runners either wood or metalcut-outs in gypsum board, veneer plastic systems Acoustical sealant sythetic latex rubber other areas where a sound rated assembly is required. It maintains a tough rubber-like seal against air-borne sound, air infiltration and moisture, and offers fast, smooth, easy application without difficulty in extrusion. The sealant's Acoustical sealant sythetic latex rubber function is to achieve and maintain the specific STC Sound Transmission Class value of the system designed. Inside of partition was filled with sound insulation. Tapes and Adhesives Caulk and Sealants See MSDS for additional information. Some applications may not be compatible with this product.