3M Self-Leveling Seam Sealer, 08307, Two-Part, 200 mL/6.75 fl oz Cartridge

Customers find the seam sealer performs well, with one mentioning it works great for sealing rain gutters. The product dries quickly, cures hard in about 8 hours, and is easy to work with. They appreciate its self-leveling properties and quick setup time, while also noting its good price and attractive appearance, particularly for drip rails. The durability receives mixed feedback, with some praising its strong bond while others report issues with the heavy body formula not hardening properly.