Auralex StopGap Acoustical Sealent<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> StopGap Acoustical Sealant is a highly elastic， water-based sealant used for reducing sound transmission at the perimeter of wall systems or around electrical box cutouts to achieve specified STC/MTC values. </span></li><li><span class="a-list-item"> StopGap is paintable and nonstaining </span></li><li><span class="a-list-item"> meets ASTM C-834 standards for flame retardancy </span></li><li><span class="a-list-item"> StopGap comes in a large， 29 oz caulking tube and therefore requires a larger than normal-sized caulking gun， which can be purchased at any local hardware store </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/316SPWpW-rL.jpg" noproxy>