Please use the following guide for determining the correct gutter sealants:
Ruscoe 12-1: For sealing gutter joints, end caps, miters, etc.
Geocel Gutter Sealant: Is used to seal gutters, end caps, and downspouts.
Rescue 911 Leak Sealer: A "quick fix" for repairing roof, gutter, and gutter joint leaks.