Tremco® Acoustical Sealant Contents: 850 mL/tube. Coverage: 27 linear feet per tube on ¼" x ¼" joints. Application: Acoustical sealant of drywall partitions, curtainwalls, corridors and/or party walls; lap joint and perimeter sealant for polyethylene vapour barrier. Tremco® Acoustical Sealant is a single component, non-skinning, non-hardening synthetic rubber sealant that will not harden, skin, shrink, bleed, or stain. The sealant has a 20-year minimum life expectancy if not left on exposed surfaces. Since the product does not harden, it will pick up dirt; thus, it is not recommended for use on exposed surfaces. Data Sheet