BASF MasterSeal TX1 Elastomeric Sealant · Texturized · 10.1oz · White MasterSeal TX 1 is a one-component, texturized, moisture-curing, gun-grade polyurethane sealant. It requires no mixing and typically requires no priming on common building materials. MasterSeal TX 1 has a textured appearance, which blends well with masonry substrates. FEATURES One-component formula requires no mixing, helping to reduce labor costs Weather resistant, producing long-lasting weather tight seals Accepts joint movement of ±25%, keeping moving joints tightly sealed High quality polyurethane polymer resists age hardening Easy to gun and tool, speeding up application and making neater joints No primer required for most construction materials, lowering installation costs