A high quality, tough, butyl rubber sealant, ideal for jobs requiring a durable watertight seal. Key FeaturesInterior/Exterior UseAvailable in White, Black, Bronze & Aluminum GrayPaintableRemains FlexibleMildew ResistantSuitable for Below Grade ApplicationsSpec-Compliant(see listing below)Uses1. Excellent sealant for use around window & door frames, in expansion joints, around concretefoundations ...