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DAP DYNAFLEX 230 Window, Door, and Trim Sealant is an all-purpose, 100% waterproof sealant perfect for both indoor and outdoor projects. With unmatched flexibility and crack resistance, this versatile silicone sealant can seal joints up to 1 wide on windows, doors, trim, shower doors, and more. Ideal for use with PVC and composite wood trimboard, DYNAFLEX 230 offers superior adhesion while maintaining a clear finish that dries in just 7-14 days. Use DAP's ultra-durable DYNAFLEX 230 sealant for a durable and long-lasting bond around your home or office.