Tremco Spectrem 2 is a medium-modulus, one-part, high-performance, neutral-cure silicone sealant ideal for a variety of perimeter caulking and glazing applications. Spectrem 2 exhibits primer less adhesion to many common building materials. We stock Spectrem 2 in a variety of colors, in both 10.3 oz. tubes and 20 oz. sausages.