Gamma Seal Lid for 3.5 and 5 Gallon Buckets (12/Cs) Transform standard 3.5 & 5 gallon buckets into airtight, water proof, leak proof, pest-proof storage containers with this Gamma Seal Lid. This patented 2 piece sealing system is very easy to use. Simply snap the universal adaptor ring onto your bucket and spin-on the removable, threaded lid. The durable elastomeric gasket keeps air, water and contaminants out, while protecting the ... This item is sold individually. — Ships from H: WA, CA, CO, MI, TN, PA, FL USA (No USPS)....more info.