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The DAP INC 8648 is a 100% silicone sealant formulated for kitchen and bath applications where a durable, watertight seal is required. Dispensed from a 9.8 oz cartridge, it bonds to non-porous surfaces including ceramic tile, porcelain, glass, and plumbing fixtures. The fully cured silicone remains flexible, resisting cracking and shrinking under repeated thermal cycling and moisture exposure. Its mildew-resistant formula helps maintain a clean appearance in wet environments. Licensed plumbers and tile contractors rely on this type of product for finishing work around sinks, tubs, showers, and countertop penetrations.
This sealant is suited for residential and light commercial wet-area applications. It performs in high-humidity environments such as bathrooms and kitchens where constant water contact is expected. Typical install scenarios include sealing joints between ceramic tile and plumbing fixtures, caulking sink-to-countertop transitions, and finishing around faucet bases or drain flanges. The clear formulation blends into most finished surfaces without requiring color matching.
Designed for use on non-porous surfaces including ceramic tile and plumbing fixtures in residential and light commercial kitchen and bath installations.
Surface must be clean, dry, and free of old caulk, soap residue, and oils before application. Shut off water supply to the fixture or area being sealed and allow surfaces to dry completely. Apply with a standard caulking gun and tool the bead immediately for full contact. Allow full cure time before exposing the seal to water, per the manufacturer label instructions.
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