DOWSIL / Dow Corning 791 Black Weatherproofing Sealant is a one-part, medium-modulus, elastomeric sealant designed for general weather sealing. Its silicone formulation cures to a flexible and curable silicone rubber building joint seal. This sealant is a specified, premium performance weather sealing product specifically designed for general glazing and weather sealing in curtain wall and building facades. *** 16 Sausages per case. *** 1 sausage - $8 *** 1 case - $60 *** 2 cases - $90 Ideal for expansion, connection, perimeter and other movement joints. Cash only.