Convert your standard plastic bucket into a leakproof airtight resealable storage container with a Gamma2? Seal Lid. Gamma Seal Lids provide superior functionality with airtight seals that lock freshness in and keep moisture out. Install the universal adapter ring first, then spin the lid for an airtight seal. Great for storing everything from pet food, livestock feed, birdseed, charcoal, and bulk human food like flour, sugar, or rice. Gamma Seal Lids are made in the USA with heavy-duty BPA-free HDPE plastic and fit on 3.5 to 7-gallon buckets.