OSI QUAD Invisible Window, Door & Siding Sealant all-season formula delivers superior performance on exterior window, door and siding applications. It offers all the great benefits of OSI QUAD in a crystal clear Invisible formula, perfect for finishing work around stone, brick and other fine building materials. OSI QUAD Invisible resists dirt & dust collection, yellowing and water washout, is self-tooling and is paintable with either latex or oil-based paints once cured. OSI QUAD Invisible can be applied to wet or dry surfaces, even at freezing temperatures. It is composed of elastomeric polymers and high quality synthetic resins. This product offers the superior adhesion characteristics and unmatched elasticity found in high performance sealants. It yields a tough, rubbery seal which resists outdoor weather-related elements like oxygen, water, ozone, UV light and heat. The formula skins over in a short time to resist dirt and dust pickup. It goes on smoothly and has easy cut-off without stringing. When cured, the surface displays a slight sheen similar to some silicone.