With a 100% silicone based formula, SSG4000AC UltraGlaze sealant forms a strong, flexible cushion between the glass and the frame. Its accelerated cure profile speeds up fabrication, helping you to meet production demands without compromising strength. An excellent solution for both in-shop and in-field structural glazing and curtainwall applications, it is made to withstand severe impact and extreme weather without tearing, rupturing, or degrading, now and well into the future. SSG4000AC UltraGlaze sealant securely bonds without a primer to many substrates and finishes including glass, glass coatings, ceramic frits, paints, and aluminum. Some finishes or substrates may require a primer. It comes backed by world-class technical support and our project-specific warranty program.