Durable Seal: Professional-grade formula ideal for sealing gutters, seams, and downspouts in both residential and commercial applications – available in White and Aluminum Gray No Shrinkage: 100% solids hybrid polymer ensures zero shrinkage and maintains long-term flexibility to absorb joint expansion and contraction Safe & Green: Solvent-free, isocyanate-free, and ultra-low VOCs (17.94 g/L) – safe for indoor or outdoor use and may qualify for LEED v4 credit requirements Versatile Bonding: Bonds to most common construction materials including aluminum, galvanized metal, and vinyl-clad surfaces – no primer required on most substrates Weather Resistant: Withstands harsh weather and UV exposure; performs reliably in temperatures from -40°F to 200°F for year-round durability Seal Bond 415 is a professional grade gutter & seam sealant. Formulated especially for sealing aluminum, galvanized and vinyl clad gutters and downspouts. SB 415 is a one-part formulation with semi-self-leveling properties for both horizontal and vertical applications. SB 415 is based on moisture cure hybrid polymer technology that reacts and cross-links in the presence of moisture to provide a durable seal with excellent weathering and UV resistance and performs in temperatures from -40° F to 200° F.