OSI 5-fl oz Clear Synthetic Polymer Gutter Sealant

OSI GS121 Gutter and Seam Sealant is composed of high quality resins and polymers which cures to form a tough, rubbery seal. This seal expands and contracts with the change of weather and temperature without cracking. Formulated especially for sealing aluminum, galvanized and vinyl clad gutters and downspouts.