Dow Corning 799 - Clear

Dow Corning 799 - Clear. Low Modulus Silicone Weatherproofing Sealant for Glazing & Cladding. Dow Corning 799 Clear is a high-performance, one-part, low modulus neutral cure silicone sealant developed for weathersealing curtain walling, building facades, and glazing systems. It cures at room temperature to form a flexible, long-lasting seal that is highly resistant to weathering, UV radiation, and moisture.. Key Features & Benefits. Low Modulus Flexibility: Excellent movement capability for dynamic joints and façade elements.. Neutral Cure: Non-corrosive formulation safe for sensitive substrates including metals and natural stone.. Crystal Clear Finish: Provides an invisible joint for discreet, clean applications.. Durable Weather Resistance: Resists UV, rain, and temperature extremes for long-term performance.. Excellent Adhesion: Bonds well to glass, aluminium, PVC, and other common construction materials.. Product Details. Type: Low modulus neutral cure silicone. Colour: Clear. Packaging: 310ml cartridge. Skin Time: Approx. 10–20 minutes. Curing Rate: 2–3mm per 24 hours. Application Instructions. Preparation: Ensure substrates are clean, dry, and free of dust or grease. Mask areas if necessary.. Apply Sealant: Cut nozzle to desired width and apply a continuous bead using a caulking gun.. Tooling: Smooth the joint with a suitable tool within the skin time to ensure full contact.. Finish: Remove masking tape immediately after tooling. Allow to cure undisturbed.. Limitations. Not recommended for structural glazing or underwater joints.. Not suitable for surfaces contaminated with oils or solvents.. Health & Safety. Use in a well-ventilated area. Avoid contact with skin and eyes. Wear gloves and safety glasses during application. Refer to the Safety Data Sheet (SDS) for full safety details.