Geocel 2321 Series GC67102 Gutter and Narrow Seam Sealant Aluminum Gray Liquid 10.3 oz Cartridge - Pack of 24

2320® and 2321 gutter and narrow seam sealant is a single-component, elastomeric, semi-self-leveling, high-performance tripolymer sealant designed to prevent the passage of air and moisture through small joints or seams.