PermaSeal composite sealer is a light-cured, methacrylate-based, unfilled resin. Its low viscosity allows excellent penetration, and the ultrathin layer minimizes the need for occlusal adjustment. Features: - Bonds to composite and etched enamel. - Seals microcracks and strengthens restorations. - Protects and revitalizes composite restorations. - Use with black micro FX tip. - Certified gluten free.