Dow Corning 799 clear silicone glass and metal building sealant is a one-part RTV silicone sealant that is noncorrosive and allows for the curing process to take place in the presence of moisture in the atmosphere. This silicone sealant will adhere to many construction materials without the need for priming. Once Dow Corning 799 silicone glass and metal building sealant becomes cured, it forms a strong and pliable bond to most building substrates. Once again, no priming is required when applied to most building materials. Please note that it is imperative to clean all joints and glazing pockets, removing all foreign matter and contaminants such as grease, oil, dust, water, frost, surface dirt, old sealants or glazing compounds, and protective coatings to obtain optimum results.
Metal (may discolor copper and brass)
Most building materials
Weather sealing of doors and windows
Sealing around metal building flashings, gutters and gutter outlets
Factory-applied glass where it would serve as the primary seal bedding compound in a finished sash
Below grade or in horizontal joints where physical abuse or abrasion is likely to be encountered.
For structural silicone glazing applications.
In totally confined spaces where sealant cannot cure because of a lack of atmospheric moisture.
On surfaces that will be painted (the paint film will not stretch with the extension of the sealant and may crack or peel).
On wet or frost-laden surfaces.
On substrates that bleed oil or plasticizers. Dow Corning 799 silicone glass and metal building sealant may discolor sensitive metals such as copper and brass and may stress-crack polycarbonate.
This product is neither tested nor represented as suitable for medical or pharmaceutical uses.